3 Some of these things indeed the disciples of Plato and Pythagoras enquired into. Of the other philosophers we need make no mention at all; they have all on this point been so excessively ridiculous; and those who have been among them in greater esteem than the rest, and who have been considered the leading men in this science, are so more than the others; and they have composed and written somewhat on the subject of polity and doctrines, and in all have been more shamefully ridiculous than children. For they have spent their whole life in making women common to all, in overthrowing the very order of life, in doing away the honor of marriage, and in making other the like ridiculous laws. As for doctrines on the soul, there is nothing excessively shameful that they have left unsaid; asserting that the souls of men become flies, and gnats, and bushes, and that God Himself is a soul; with some other the like indecencies.
And not this alone in them is worthy of blame, but so is also their ever-shifting current of words; for since they assert everything on uncertain and fallacious arguments, they are like men carried here and there in Euripus, and never remain in the same place.
Not so this fisherman; for all he says is infallible; and standing as it were upon a rock, he never shifts his ground. For since he has been thought worthy to be in the most secret places, and has the Lord of all speaking within him, he is subject to nothing that is human. But they, like persons who are not held worthy even in a dream to set foot in the king's palace, but who pass their time in the forum with other men, guessing from their own imagination at what they cannot see, have erred a great error, and, like blind or drunken men in their wandering, have dashed against each other; and not only against each other, but against themselves, by continually changing their opinion, and that ever on the same matters.
Source: Homilies on the Gospel of John (New Advent)