Pain makes you think. Thought makes you wise.
Wisdom makes life endurable.
One evening several years ago, Sydney Harris of the Chicago Daily News and a Quaker friend walked up to a newsstand. The Quaker bought a paper, then thanked the vendor politely. The vendor didn't so much as acknowledge his thanks. The Quaker's answer was revealing. He watched as a red sports car came over the top of a hill and followed the road up to the spot where he stood.