I have quite a few:
"life of man, solitary, nasty, brutish and short."
-Hobbes
"Man, by nature are political animals."
-Aristotle
"I may not agree with what you have to say, but I'll defend to the death your right to say it."
-Voltaire
"History is a set of lies agreed upon."
-Napoleon Bonaparte
"A single death is a tragedy. A million deaths is a statistic"
- Stalin
"Wise men talk because they have something to say; fools, because they have to say something."
- Plato
"A nation that gives up a little liberty for a little order deserves neither."
- Thomas Jefferson
"You're not your f*ckin' khakis."
- Tyler Durden
"Self-improvement is masturbation."
- Tyler Durden
"A life unexamined is not a life worth living."
- Socrates
"All things are the same, familiar in experience, and ephemeral in time, and worthless in the matter. Everything now is just as it was in the time of those whom we have buried."
- Marcus Aurelius
And, of course, one of my favorties:
"The ability to quote is a serviceable substitute for wit."
- George Bernard Shaw
What are you favorite quotations/words of wisdom that you live by?