Theologically Augustine was of the Alexandrian school which favored  allegory as a means to interpret the Bible. The Antiochian school, of  which Chrysostom was the most illustrious example, relied rather on the  historic-grammatical method which strived to remain faithful to context  and language. Although the Alexandrian school used allegory, it  recognized also that the text had a literal meaning. Hence, when writing  about the creation of the first man and woman, Augustine sought to find  both the literal and spiritual meaning which caused his overall view to  become internally contradictory.  In his literal interpretation of the creation of the man and woman  Augustine wrote:  
"But we, for our part, have no manner of doubt that to increase and  multiply and replenish the earth in virtue of the blessing of God, is a  gift of marriage as God instituted it from the beginning before man  sinned, when He created them male and female,—in other words, two sexes  manifestly distinct. And it was this work of God on which His blessing  was pronounced. For no sooner had Scripture said, “Male and female  created He them,” than it immediately continues, “And God blessed them,  and God said unto them, Increase, and multiply, and replenish the  earth, and subdue it,” etc.  And though all these things may  not unsuitably be interpreted in a spiritual sense, yet “male and  female” cannot be understood of two things in one man, as if there were  in him one thing which rules, another which is ruled; but it is quite  clear that they were created male and female, with bodies of different  sexes, for the very purpose of begetting offspring, and so increasing,  multiplying, and replenishing the earth; and it is great folly to oppose  so plain a fact. It was not of the spirit which commands and  the body which obeys, nor of the rational soul which rules and the  irrational desire which is ruled, nor of the contemplative virtue which  is supreme and the active which is subject, nor of the understanding of  the mind and the sense of the body, but plainly of the matrimonial union  by which the sexes are mutually bound together, that our Lord, when  asked whether it were lawful for any cause to put away one’s wife (for  on account of the hardness of the hearts of the Israelites Moses  permitted a bill of divorcement to be given), answered and said, “Have  ye not read that He which made them at the beginning made them male and  female, and said, For this cause shall a man leave father and mother,  and shall cleave to his wife, and they twain shall be one flesh?  Wherefore they are no more twain, but one flesh. What, therefore, God  hath joined together, let not man put asunder.” It is certain, then,  that from the first men were created, as we see and know them to be now,  of two sexes, male and female, and that they are called one, either on  account of the matrimonial union, or on account of the origin of the  woman, who was created from the side of the man. And it is by this  original example, which God Himself instituted that the apostle  admonishes all husbands to love their own wives in particular. " (The  City of God, Book XIV, Ch 22)  
Although Augustine writes that it is not possible to understand “male  and female” as two entities in one individual - one ruling, the other  ruled – we find the argument in his allegorical interpretation of the  same text.  
"Who can doubt that this renewing takes place in the mind? But and if  any doubt, let him hear a more open sentence. For, giving the same  admonition, he thus saith in another place: “As is the truth in Jesus,  that ye put off concerning the former conversation the old man, him  which is corrupt according to the lust of deception; but be ye renewed  in the spirit of your mind, and put on the new man, him which after God  is created.” What then? Have women not this renewal of mind in which is  the image of God? Who would say this? But in the sex of their body they  do not signify this; therefore they are bidden to be veiled. The part,  namely, which they signify in the very fact of their being women, is  that which may be called the concupiscential part, over which the  mind bears rule, itself also subjected to its  God, when life is most rightly and orderly conducted. What,  therefore, in a single individual human being is the mind and the  concupiscence, (that ruling, this ruled; that lord, this subject,) the  same in two human beings, man and woman, is in regard of the sex of the  body exhibited in a figure." (Of the Work of Monks, 40)  
“Mind and concupiscence (irrational desire)” are changed into “reason  and appetite” in his book Confessions.  "We behold the face of the earth furnished with terrestrial creatures,  and man, created after Thy image and likeness, in that very image and  likeness of Thee (that is, the power of reason and understanding) on  account of which he was set over all irrational creatures. And  as in his soul there is one power which rules by directing, another  made subject that it might obey, so also for the man was corporeally  made a woman, who, in the mind of her rational understanding should  also have a like nature, in the sex, however, of her body should be in  like manner subject to the sex of her husband, as the appetite of action  is subjected by reason of the mind, to conceive the skill of acting  rightly. These things we behold, and they are severally good,  and all very good." (Confessions, Book VIII, Chapter XXXII, 47) 
Although Augustine affirmed that also the woman has a rational  understanding, in the same book, in a later chapter, he again changes  the metaphor; this time from “reason and appetite” to “understanding and  action.”
"Next didst Thou form the living soul of the faithful, through  affections ordered by the vigour of continency; and afterwards, the mind  subjected to Thee alone, and needing to imitate no human authority,  Thou didst renew after Thine image and likeness; didst  subject its rational action to the excellency of the understanding, as  the woman to the man; and to all Thy ministries, necessary  for the perfecting of the faithful in this life, Thou didst will that,  for their temporal uses, good things, fruitful in the future time,  should be given by the same faithful." (Confessions, Book VIII, Ch  XXXIV)
When we return to The City of God, we find yet  another metaphor - that of “soul and body” – in Augustine’s  interpretation of Genesis 3.16.  
"Yet He does not dismiss him without counsel, holy, just, and good.  “Fret not thyself,” He says, “for unto thee shall be his turning, and  thou shall rule over him.” Over his brother, does He mean? Most  certainly not. Over what, then, but sin? For He had said, “Thou hast  sinned,” and then He added, “Fret not thyself, for to thee shall be its  turning, and thou shall rule over it.” And the “turning” of sin to the  man can be understood of his conviction that the guilt of sin can be  laid at no other man’s door but his own. For this is the health-giving  medicine of penitence, and the fit plea for pardon; so that, when it is  said, “To thee its turning,” we must not supply “shall be,” but we must  read, “To thee let its turning be,” understanding it as a  command, not as a prediction. For then shall a man rule over his sin when he does not  prefer it to himself and defend it, but subjects it by repentance;  otherwise he that becomes protector of it shall surely become its  prisoner. But if we understand this sin to be that carnal concupiscence  of which the apostle says, “The flesh lusteth against the spirit,”  among the fruits of which lust he names envy, by which assuredly Cain  was stung and excited to destroy his brother, then we may properly  supply the words “shall be,” and read, “To thee shall be its turning,  and thou shalt rule over it.” For when the carnal part which the apostle  calls sin, in that place where he says, “It is not I who do it, but sin  that dwelleth in me,” that part which the philosophers also call  vicious, and which ought not to lead the mind, but which the mind ought  to rule and restrain by reason from illicit motions,—when, then, this  part has been moved to perpetrate any wickedness, if it be curbed and if  it obey the word of the apostle, “Yield not your members instruments of  unrighteousness unto sin,” it is turned towards the mind and subdued  and conquered by it, so that reason rules over it as a subject. It was  this which God enjoined on him who was kindled with the fire of envy  against his brother, so that he sought to put out of the way him whom he  should have set as an example. “Fret not thyself,” or compose thyself,  He says: withhold thy hand from crime; let not sin reign in your mortal  body to fulfill it in the lusts thereof, nor yield your members  instruments of unrighteousness unto sin. “For to thee shall be its  turning,” so long as you do not encourage it by giving it the rein, but  bridle it by quenching its fire. “And thou shall rule over it;” for when  it is not allowed any external actings, it yields itself to the rule of  the governing mind and righteous will, and ceases from even internal  motions. There is something similar said in the same divine book of the  woman, when God questioned and judged them after their sin, and  pronounced sentence on them all,—the devil in the form of the serpent,  the woman and her husband in their own persons. For when He  had said to her, “I will greatly multiply thy sorrow and thy conception;  in sorrow shall thou bring forth children,” then He added, “and thy  turning shall be to thy husband, and he shall rule over thee.” What is  said to Cain about his sin, or about the vicious concupiscence of his  flesh, is here said of the woman who had sinned; and we are to  understand that the husband is to rule his wife as the soul rules the  flesh. And therefore, says the apostle, “He that loveth his  wife, loveth himself; for no man ever yet hated his own flesh.” This  flesh, then, is to be healed, because it belongs to ourselves: is not to  be abandoned to destruction as if it were alien to our nature." (The  city of God, Book XV, Ch 7)  
Augustine sees the “turning” as a command, not a consequence (which was  also Jerome’s understanding, wherefore he changed the meaning of Genesis  3.16 in the Vulgate). I.e. Cain must allow sin to turn to him in order  that he might subject it to his control. The same is true of the man,  who must allow the woman to turn to him in order to subject her to his  control as the soul rules over the flesh – a Platonic concept. The woman  is pictured as a “vicious concupiscence,” an evil desire, which must be  subdued by the soul. Because the body is considered decidedly inferior  to the soul, the inferiority of the woman becomes part of Augustine’s  theology.  
"For whether all souls are derived by propagation from the first, or are  in the case of each individual specially created, or being created  apart from the body are sent into it, or introduce themselves into it of  their own accord, without doubt this creature endowed with  reason, namely, the human soul—appointed to occupy an inferior, that is,  an earthly body—after the entrance of sin, does not govern its own body  absolutely according to its free will. For I did not say,  “after his sin,” or “after he sinned,” but after the entrance of sin,  that whatever might afterwards, if possible, be determined by reason as  to the question whether the sin was his own or the sin of the first  parent of mankind, it might be perceived that in saying that “the soul,  appointed, after the entrance of sin, to occupy an inferior body, does  not govern its body absolutely according to its own free will,” I stated  what is true; for “the flesh lusteth against the spirit, and in this  we groan, being burdened,” and “the corruptible body weighs  down the soul,”—in short, who can enumerate all the evils  arising from the infirmity of the flesh, which shall assuredly cease  when “this corruptible shall have put on incorruption,” so that “that  which is mortal shall be swallowed up of life”?" (Letter CXLIII, 6)
Augustine understands the relationship between the man and the woman in  the post-fallen world as a struggle between the flesh and the soul in  which the soul is never able to completely govern the body.
"Did not Cicero, in discussing the difference of governments in his De Republica, adopt a simile from human nature, and  say that we command our bodily members as children, they are so  obedient; but that the vicious parts of the soul must be treated as  slaves, and be coerced with a more stringent authority? And no  doubt, in the order of nature, the soul is more excellent than the  body; and yet the soul commands the body more easily than  itself. Nevertheless this lust, of which we at present speak,  is the more shameful on this account, because the soul is therein  neither master of itself, so as not to lust at all, nor of the body, so  as to keep the members under the control of the will; for if they were  thus ruled, there should be no shame. But now the soul is ashamed that  the body, which by nature is inferior and subject to it, should resist  its authority. For in the resistance experienced by the soul in the  other emotions there is less shame, because the resistance is from  itself, and thus, when it is conquered by itself, itself is the  conqueror, although the conquest is inordinate and vicious, because  accomplished by those parts of the soul which ought to be subject to  reason, yet, being accomplished by its own parts and energies, the  conquest is, as I say, its own. For when the soul conquers  itself to a due subordination, so that its unreasonable motions are  controlled by reason, while it again is subject to God, this is a  conquest virtuous and praiseworthy. Yet there is less shame when the  soul is resisted by its own vicious parts than when its will and order  are resisted by the body, which is distinct from and inferior to it, and  dependent on it for life itself. (The City of God, Book XIV  23)
Here the inherent contradiction in Augustine’s theology becomes clear  for although he depicts the woman as part of the soul in Confessions, albeit as irrational desire, he now  removes her completely from the realm of reason into the realm of the  “animal body,” which is entirely distinct from the soul, but not alien  by nature. 
"And a man is in this life spiritual in such a way, that he is  yet carnal with respect to his body, and sees another law in his  members warring against the law of his mind; but even in his body he  will be spiritual when the same flesh shall have had that resurrection  of which these words speak, “It is sown an animal body, it shall rise a  spiritual body.” (The City of God, Book XXII, Ch 21)
Yet, Augustine contradicts himself once more when writing about  Ephesians 5. 
"And yet the woman [in Eph 5] received not pattern from the  body, or flesh, to be so subject to the husband as the flesh to the  spirit; but either the Apostle would have understood by  consequence, what he omitted to state: or haply because the flesh  lusteth against the spirit in the mortal and sick estate of this life,  therefore he would not set the woman a pattern of subjection from it."  (On Continence, 23)  
And again.  
"The apostle puts flesh for woman; because, when she was made of his  rib, Adam said, “This is now bone of my bone, and flesh of my flesh.”  And the apostle saith, “He that loveth his wife loveth himself; for no  one ever hated his own flesh.” Flesh, then, is put for woman,  in the same manner that spirit is sometimes put for husband. Wherefore?  Because the one rules, the other is ruled; the one ought to command, the  other to serve. For where the flesh commands and the spirit  serves, the house is turned the wrong way. What can be worse than a  house where the woman has the mastery over the man? But that house is  rightly ordered where the man commands and the woman obeys. In like  manner that man is rightly ordered where the spirit commands and the  flesh serves." (Tractates on John, Tractate II, 14)  
The man is never called a “spirit,” in the New Testament. He is called a  “head.” Neither is the woman called “flesh,” she is likened unto a  body, which together with the man - the “head” - creates one flesh.  Augustine failed to make the distinction because of his wish to  incorporate Plato’s concept of the soul ruling over the sinful flesh.  It is noteworthy that Augustine did not see the man’s prior creation as a  reason for the man’s rule; instead he understood it as creating a unity  of one flesh in marriage, and the unity of humankind as originating  from one beginning - the first man.  
"[E]ven as it is written in the book of Ecclesiasticus: “Of the woman  came the beginning of sin, and through her we all die.” Now whether it  be said of the woman or of Adam, both statements pertain to the first  man; since (as we know) the woman is of the man, and the two are one  flesh. Whence also it is written: “And they twain shall be one flesh;  wherefore,” the Lord says, “they are no more twain, but one flesh.” (On  the Merits and Forgiveness of Sins, and on the Baptism of Infants, Book  I, Ch 21)  
"The woman, therefore, is a creature of God even as the man; but by her  creation from man unity is commended; and the manner of her creation  prefigured, as has been said, Christ and the Church." (The city of God,  Book XII, Ch 17)  
"And indeed He did not even create the woman that was to be given him as  his wife, as he created the man, but created her out of the man, that  the whole human race might derive from one man." (The city of God, Book  XII, Ch 21)  
"With good cause, therefore, does the true religion recognize and  proclaim that the same God who created the universal cosmos, created  also all the animals, souls as well as bodies. Among the terrestrial  animals man was made by Him in His own image, and, for the reason I have  given, was made one individual, though he was not left solitary. For  there is nothing so social by nature, so unsocial by its corruption, as  this race. And human nature has nothing more appropriate, either for the  prevention of discord, or for the healing of it, where it exists, than  the remembrance of that first parent of us all, whom God was pleased to  create alone, that all men might be derived from one, and that they  might thus be admonished to preserve unity among their whole multitude.  But from the fact that the woman was made for him from his side, it was  plainly meant that we should learn how dear the bond between man and  wife should be." (The City of God, Book XII, Ch 27)  
Even the woman being called “help” was interpreted as signifying  marriage by Augustine.  "There was, however, undoubtedly marriage, even when sin had no prior  existence; and for no other reason was it that woman, and not a second  man, was created as a help for the man." (A Treatise on the Grace of  Christ, on Original Sin, Book II, Ch 40)  
Yet, again Augustine changes his mind: 
"Whereas, too, he made the woman to be an helpmeet for him: not for  carnal concupiscence,—since, indeed, they had not corruptible bodies at  that period, before the punishment of sin invaded them in the form of  mortality,—but for this purpose, that the man might at once have glory  of the woman in so far as he went before her to God, and present in  himself an example to her for imitation in holiness and piety, even as  he himself was to be the glory of God in so far as he followed his  wisdom."  (On the Catechising Of the Uninstructed, Ch 18)  
Augustine did not derive his belief in the man’s rule from the man’s  prior creation; instead his beliefs about domestic harmony were clearly  of Roman origin.  
"Since, then, the house ought to be the beginning or element of the  city, and every beginning bears reference to some end of its own kind,  and every element to the integrity of the whole of which it is an  element, it follows plainly enough that domestic peace has a relation to  civic peace,—in other words, that the well-ordered concord of  domestic obedience and domestic rule has a relation to the well-ordered  concord of civic obedience and civic rule. And therefore it follows,  further, that the father of the family ought to frame his domestic rule  in accordance with the law of the city, so that the household may be in  harmony with the civic order." (The City of God, Book XIX Ch  16)  
As a Roman, his concern was for the “order of nature” and the  preservation of justice, wherefore in the following text we find why  Augustine had to liken the woman to the irrational appetite in order to  avoid the implication of equality.  
"This is prescribed by the order of nature: it is thus that God has  created man. For “let them,” He says, “have dominion over the fish of  the sea, and over the fowl of the air, and over every creeping thing  which creepeth on the earth.” He did not intend that His  rational creature, who was made in His image, should have dominion over  anything but the irrational creation,—not man over man, but man over the  beasts. And hence the righteous men in primitive times were  made shepherds of cattle rather than kings of men, God intending thus to  teach us what the relative position of the creatures is, and what the  desert of sin; for it is with justice, we believe, that the condition of  slavery is the result of sin. And this is why we do not find the word  “slave” in any part of Scripture until righteous Noah branded the sin of  his son with this name. It is a name, therefore, introduced by sin and  not by nature. The origin of the Latin word for slave is supposed to be  found in the circumstance that those who by the law of war were liable  to be killed were sometimes preserved by their victors, and were hence  called servants. And these circumstances could never have arisen save  through sin. For even when we wage a just war, our adversaries must be  sinning; and every victory, even though gained by wicked men, is a  result of the first judgment of God, who humbles the vanquished either  for the sake of removing or of punishing their sins. Witness that man of  God, Daniel, who, when he was in captivity, confessed to God his own  sins and the sins of his people, and declares with pious grief that  these were the cause of the captivity. The prime cause, then, of  slavery is sin, which brings man under the dominion of his fellow,—that  which does not happen save by the judgment of God, with whom is no  unrighteousness, and who knows how to award fit punishments to every  variety of offence. But our Master in heaven says, “Every one who doeth  sin is the servant of sin.” And thus there are many wicked masters who  have religious men as their slaves, and who are yet themselves in  bondage; “for of whom a man is overcome, of the same is he brought in  bondage.” And beyond question it is a happier thing to be the slave of a  man than of a lust; for even this very lust of ruling, to mention no  others, lays waste men’s hearts with the most ruthless dominion.  Moreover, when men are subjected to one another in a peaceful order, the  lowly position does as much good to the servant as the proud position  does harm to the master. But by nature, as God first created us, no one  is the slave either of man or of sin. This servitude is, however, penal,  and is appointed by that law which enjoins the preservation of the  natural order and forbids its disturbance; for if nothing had been done  in violation of that law, there would have been nothing to restrain by  penal servitude. And therefore the apostle admonishes slaves to be  subject to their masters, and to serve them heartily and with good-will,  so that, if they cannot be freed by their masters, they may themselves  make their slavery in some sort free, by serving not in crafty fear, but  in faithful love, until all unrighteousness pass away, and all  principality and every human power be brought to nothing, and God be all  in all." (The City of God, Book XIX, Ch 15)  
If the subjection of a human to another is the result of sin, the woman  must either lack the rational faculty which makes her human, or her  subjection began after the entrance of sin. Incidentally, Thomas Aquinas  used the assumed lack of the woman’s reason as the foundation for his  belief that the woman’s subjection belonged to the created order.  Augustine was not as successful as Thomas in his attempt to create a  creation-based subjection for not all theologians were willing to  embrace Neo-Platonism in the fourth century, although they for the most  part heartily agreed with his synthesis of the ideal Roman society and  theology. The church continued to appoint women into ecclesiastical  leadership for centuries after Augustine’s death and they disappeared  from the medieval church only as a result of the resurrection of  Aristotle’s philosophy as the crusaders returned his writings to Europe  from the Orient where it had been studied for centuries by Muslims and  Jews alike.