Lactantius

“ For ignorance of all things cannot be wisdom, the peculiar property of which is knowledge. And thus, when he overcame the philosophers, and taught that they knew nothing, he himself also lost the name of philosopher, because his system is to know nothing. For he who blames others because they are ignorant, ought himself to have knowledge; but when he knows nothing, what perverseness or what insolence it is, to constitute himself a philosopher on account of that very thing for which he takes away the others! ”

“ If you convict us of knowing nothing, and therefore of being unwise because we know nothing, does it follow that you are not wise, because you confess that you know nothing? What progress, therefore, did Arcesilas make, except that, having despatched all the philosophers, he pierced himself also with the same sword? ”

“ In short, there is no art which is not dependent on knowledge. Therefore Arcesilas ought, if he had any wisdom, to have distinguished the things which were capable of being known, and those which were incapable. But if he had done this, he would have reduced himself to the common herd. For the common people have sometimes more wisdom, because they are only so far wise as is necessary. And if you inquire of them whether they know anything or nothing, they will say that they know the things which they know, and will confess that they are ignorant of what they are ignorant. ”