De Opificio Mundi

Of existing things, there are some which partake neither of virtue nor of vice; as for instance, plants and irrational animals; the one, because they are destitute of soul, and are regulated by a nature void of sense; and the other, because they are not endowed with mind or reason. But mind and reason may be looked upon as the abode of virtue and vice; as it is in them that they seem to dwell. Some things again partake of virtue alone, being without any participation in any kind of vice; as for instance, the stars, for they are said to be animals, and animals endowed with intelligence; or I might rather say, the mind of each of them is wholly and entirely virtuous, and unsusceptible of every kind of evil. Some things again are of a mixed nature, like man, who is capable of opposite qualities, of wisdom and folly, of temperance and dissoluteness, of courage and cowardice, of justice and injustice, in short of good and evil, of what is honourable and what is disgraceful, of virtue and vice.

Now it was a very appropriate task for God the Father of all to create by himself alone, those things which were wholly good, on account of their kindred with himself. And it was not inconsistent with his dignity to create those which were indifferent since they too are devoid of evil, which is hateful to him. To create the beings of a mixed nature, was partly consistent and partly inconsistent with his dignity; consistent by reason of the more excellent idea which is mingled in them; inconsistent because of the opposite and worse one.

It is on this account that Moses says, at the creation of man alone that God said, Let us make man, which expression shows an assumption of other beings to himself as assistants, in order that God, the governor of all things, might have all the blameless intentions and actions of man, when he does right attributed to him; and that his other assistants might bear the imputation of his contrary actions. For it was fitting that the Father should in the eyes of his children be free from all

And very beautifully after he had called the whole race man, did he distinguish between the sexes, saying, that they were created male and female; although all the individuals of the race had not yet assumed their distinctive form; since the extreme species are contained in the genus, and are beheld, as in a mirror, by those who are able to discern acutely.