"Those who know do not talk.
Those who talk do not know."
-Lao Tzu, Tao Te Ching
"Man's mind, once stretched by a new idea, never regains its original dimensions."
-Oliver Wendell Holmes
"The unexamined life is not worth living."
-Socrates
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense."
-Buddha
"He who fights with monsters should look to it that he himself does not become a monster."
-Friedrich Nietzsche
