LITB posted the following in his current thread:

How you think about a problem is more important than the problem itself. So always think positively.” - NORMAN VINCENT PEALE

If you wish to travel far and fast, travel light. Take off all of your envies, jealousies, unforgiveness, selfishness and fear” - CESARE PAVESE

"The very best proof that something can be done is that someone has already done it" -- BERTRAND RUSSELL

And I just found this one yesterday:

"Well-timed silence hath more eloquence than speech." ~ Martin Farquhar Tupper