In the person of the Jew, Celsus continues to find fault with Jesus, alleging that “he did not show himself to be pure from all evil.” Let Celsus state from what “evil” our Lord did not, show Himself to be pure. If he means that, He was not pure from what is properly termed “evil,” let him clearly prove the existence of any wicked work in Him. But if he deems poverty and the cross to be evils, and conspiracy on the part of wicked men, then it is clear that he would say that evil had happened also to Socrates, who was unable to show himself pure from evils.
And how great also the other band of poor men is among the Greeks, who have given themselves to philosophical pursuits, and have voluntarily accepted a life of poverty, is known to many among the Greeks from what is recorded of Democritus, who allowed his property to become pasture for sheep; and of Crates, who obtained his freedom by bestowing upon the Thebans the price received for the sale of his possessions. Nay, even Diogenes himself, from excessive poverty, came to live in a tub; and yet, in the opinion of no one possessed of moderate understanding, was Diogenes on that account considered to be in an evil (sinful) condition.
Source: Against Celsus (New Advent)