Here is an ongoing compendium of quotes that I enjoy and I hope you will as well.

General Quotes

• "Walk tall, kick ass, learn to speak Arabic, love music and never forget you come from a long line of truth seekers, lovers and warriors." ~ Hunter S. Thompson, in a note to his grandson
  
• "Convictions are more dangerous enemies of truth than lies" ~ Nietzsche, Human, all too human
• "My mind is made up, don't confuse me with facts." ~ My grandfather
• "When you come to a fork in the road, take it!" ~ Yogi Berra
• "There ain't no devil, there's just God when he gets drunk." ~ Tom Waits
• "The drunker I sit, the longer I get." ~ My grandfather
• "I'd rather have a free bottle in front of me than a prefrontal lobotomy." ~ Dean Martin et al
• "Do what you love, and die" ~ Robin Viray, conversation
• "The future ain't what it used to be." ~ Yogi Berra
• "Pour me a cap, I just can't drink no more" ~ Tom Waits
• "It doesn't matter in what form you begin, whether you begin as a human being, or a fruit fly, or a beetle, or a bird for it feels the same way that you feel now. So we're really all in the same place, we all have above us things much higher than ourselves, and we all have above us things we feel much lower than we. There are things out there on the left and things out there on the right, and things in front and things behind. You're the middle. You're the middle everywhere, always." ~ Alan Watts, Philosophical Fantasies
• "The disease of cancer will be banished from life by calm, unhurrying, persistent men and women, working, with every shiver of feeling controlled and suppressed, in hospitals and laboratories. And the motive that will conquer cancer will not be pity nor horror; it will be curiosity to know how and why."
  "And the desire for service," said Lord Tamar.
  "As the justification of that curiosity," said Mr. Sempack, "but not as the motive. Pity never made a good doctor, love never made a good poet. Desire for service never made a discovery." ~ H.G. Wells, Meanwhile
• "So if you understand that you are, really and truly, always in the same place, just as every creature thinks it's a human being and just as every being turns out to be a reproduction by some interersting technology, whether it's electronic or biological makes very little difference, then you understand the nature of life....You can ask yourself very, very - I won't say seriously because it really isn't serious, it's sincere - ask yourself, if that's so, if the place in which you are now is the place where everything and everybody else really is. Only there's an arrangement to pretend that you ought to be somewhere else, so the place where you are is the place where you are always pretending you ought to be somewhere else. This is the nature of life, this is the pulse. I ought to be somewhere else." ~ Alan Watts, Philosophical Fantasies

Science and Math Quotes

• "Who ordered that" ~ Isidor Isaac Rabi, on the discovery of the muon
• "Science is the belief in the inorance of experts." ~ Richard Feynman
• "Physics is an inverse problem" ~ David Isaacson, conversation
• "If I were to awaken after having slept for a thousand years, my first question would be: Has the Riemann hypothesis been proven?" ~ David Hilbert
• "If relativity is proved right, the Germans will call me a German, the Swiss will call me a Swiss, and the French will call me a citizen of the world. If relativity is proved wrong, the French will call me a Swiss, the Swiss will call me a German, and the Germans will call me a Jew." ~ Albert Einstein, unsourced
• "Suppose it were perfectly certain that the life and fortune of every one of us would, one day or other, depend upon his winning or losing a game of chess. Don't you think that we should all consider it to be a primary duty to learn at least the names and the moves of the pieces; to have a notion of a gambit, and a keen eye for all the means of giving and getting out of check? Do you not think that we should look with a disapprobation amounting to scorn, upon the father who allowed his son, or the state which allowed its members, to grow up without knowing a pawn from a knight?
  "Yet it is a very plain and elementary truth, that the life, the fortune, and the happiness of every one of us, and, more or less, of those who are connected with us, do depend upon our knowing something of the rules of a game infinitely more difficult and complicated than chess. It is a game which has been played for untold ages, every man and woman of us being one of the two players in a game of his or her own. The chessboard is the world, the pieces are the phenomena of the universe, the rules of the game are what we call the laws of Nature. The player on the other side is hidden from us. We know that his play is always fair, just, and patient. But also we know, to our cost, that he never overlooks a mistake, or makes the smallest allowance for ignorance. To the man who plays well, the highest stakes are paid, with that sort of overflowing generosity with which the strong shows delight in strength. And one who plays ill is checkmated - without haste, but without remorse.
  "My metaphor will remind some of you of the famous picture in which Retzsch has depicted Satan playing at chess with man for his soul. Substitute for the mocking fiend in that picture a calm, strong angel who is playing for love, as we say, and would rather lose than win - and I should accept it as an image of human life.
  "Well, what I mean by Education is learning the rules of this mighty game. In other words, education is the instruction of the intellect in the laws of Nature, under which name I include not merely things and their forces, but men and their ways; and the fashioning of the affections and of the will into an earnest and loving desire to move in harmony with those laws. For me, education means neither more nor less than this. Anything which professes to call itself education must be tried by this standard, and if it fails to stand the test, I will not call it education, whatever may be the force of authority, or of numbers, upon the other side." ~ Thomas Huxley, A Liberal Education