Doctor Who wisdom.
The Dalai Lama on humanity. This is definitely one of my favorite quotes of all time.
Believe nothing, no matter where you read it or who has said it, not even if i have said it, unless it agrees with your own reason and your own common sense~~Buddha
Don't even care if he's fictitious.
"Some cause happiness wherever they go; others, whenever they go." -Oscar Wilde
Dr. Richard Dawkins, ethologist and evolutionary biologist - If you havent read his books, youre missing out. http://bit.ly/HqvJnA