Currently I am reading Neal Whitten's "No-Nonsense Advice For Successful Projects". Some quotable quotes:

There is no limit to what a man can do or where he can go if he doesn't mind who gets the credit
- Ronald Reagan

He who asks is a fool for five minutes, but he who does not ask remains a fool forever
- Chinese Proverb

In the midst of great joy do not promise anyone anything. In the midst of great anger do not answer anyone's letter
- Chinese Proverb

It is my belief, you cannot deal with the most serious things in the world unless you understand the most amusing
- Sir Winston Churchill