Here's a link to a bunch of Albert Einstein quotes. There are some really great ones in there (of course).
http://www.brainyquote.com/quotes/authors/a/albert_einstein.html
"I have spent most of the day putting in a comma and the rest of the day taking it out." - Oscar Wilde
"Aspire to decency. Practice civility toward one another. Admire and emulate ethical behavior wherever you find it. Apply a rigid standard of morality to your lives; and if periodically you fail - as you surely will - adjust your lives, not the standards." - Ted Koppel
"Bitterness is like cancer. It eats upon the host. But anger is like fire. It burns it all clean." - Maya Angelou