A long habit of not thinking a thing wrong gives it a superficial appearance of being right.
A good leader can engage in a debate frankly and thoroughly, knowing that at the end he and the other side must be closer, and thus emerge stronger. You don't have that idea when you are arrogant, superficial, and uninformed.
Our modern world, though infinitely more complex than that of ancient Greece, is also far more superficial. Where the Greeks offered simple psychological training, we live in an age of style and spin in which perceptions of good and evil slither and shift with the political view of the moment.
Although for some people cinema means something superficial and glamorous, it is something else. I think it is the mirror of the world.
The most common error made in matters of appearance is the belief that one should disdain the superficial and let the true beauty of one's soul shine through. If there are places on your body where this is a possibility, you are not attractive - you are leaking.