No man can expect to find a friend without faults; nor can he propose himself to be so to another. Without reciprocal mildness and temperance there can be no continuance of friendship. Every man will have something to do for his friend, and something to bear with in him. The sober man only can do the first; and for the latter, patience is requisite. It is better for a man to depend on himself, than to be annoyed with either a madman or a fool.
It's not as though there aren't many, many art works and many other cultures, but there was something special about the civic nature of the Greek theater. All the citizens stopped working. They came into these theaters. It wasn't like a Broadway theater where you sit in the dark and you expect to be passively entertained. You're in this theater, amphitheater, in bright sunlight looking at your fellow citizens, recognizing their faces, and thinking with them about the future of your city. I think very few cultures have had a theatrical tradition that is quite so civic.