"I think, by Zeus," says Socrates, "that I am far removed from knowing the cause of any of these things. I do not even admit that by adding one to one I obtain two, by such an addition. For I wonder how it is that each was supposed to be one when by itself, while now, that they have been added to one another, they have become two. Neither can I convince myself that if one thing divides a thing in two, that this division is the cause of it becoming two. For this would be the opposite way of making two. But when I heard somebody reading something from a book, written by Anaxagoras as he said, to the effect that it is reason which had arranged everything and was the cause of everything, I rejoiced at this cause.... Now if one were to search for the cause of all things, of their origin, existence and passing, he should only find out what is the best way to maintain their existence.... Hence it is not meet that man should care for anything else in regard to himself as well as to all other things, but for that which is best and most excellent, and then he would also know the worst about things, for the understanding of both is the same. Considering this, I was glad to have found a teacher who knows about the cause of all things, who suited me, I mean Anaxagoras, and who would now tell me, first whether the earth is round or flat, and after telling me that, would also explain to me the necessity for it and the cause, by pointing to the fact that it was better that it should be so. And when he claimed that the earth was the center of things, I hoped he would explain why it was better that it should be the center, and when he had explained that, I was resolved that I would not ask for any other cause. In the same way I was going to inquire after the cause of the sun, the moon, and the other stars, etc.... For I did not believe that after claiming all this to have been arranged by reason, he would be dragging in any other cause than that of being best to have it just so. And this wonderful hope I had to abandon, my friends, when I continued to read and saw that the man accomplished nothing by reason and adduces no other reasons relating to the arrangement of things, but quotes air, and water, and ether, and many other astonishing things.