A poet who reads his own verse in public may have other nasty habits.

Never frighten a little man. He'll kill you.

When one teaches, two learn.

I've found out why people laugh. They laugh because it hurts... because it's the only thing that'll make it stop hurting.

If you would know a man, observe how he treats a cat.

Human beings hardly ever learn from the experience of others. They learn; when they do, which isn't often, on their own, the hard way.