The man who strikes first admits that his ideas have given out. He who asks is a fool for five minutes, but he who does not ask remains a fool forever. It is the mark of an educated mind to be able to entertain a thought without accepting it. People who know little are usually great talkers, while men who know much say little. If it takes a lot of words to say what you have in mind, give it more thought.
Wise men write many books, in words too hard to understand.
The cure for boredom is curiosity. The optimist thinks that this is the best of all possible worlds, and the pessimist knows it. Lack of will power has caused more failure than lack of intelligence or ability. Ten people who speak make more noise than ten thousand who are silent. Conscience is the inner voice that warns us that someone might be looking.