"The most difficult secret for a man to keep is his own opinion of himself."

"One has to look out for engineers - they begin with sewing machines and end up with the atomic bomb."

"A secret is not something unrevealed, but something told privately, in a whisper."

"The reason people find it so hard to be happy is that they always see the past better than it was, the present worse than it is, and the future less resolved than it will be."

"Honor is like a match, you can only use it once."