[8] What then was the cause of his hatred? For perhaps you are desirous to hear this. There are some persons who make to themselves gods of substance destitute of all distinctive quality, and species, and shape, neither knowing the cause which puts things in motion, nor showing any anxiety to learn of those who do know, but [4] being contented with their ignorance and want of understanding of the most important kind of learning, which was in fact the first and only thing of which it was absolutely necessary to labour for the understanding.