„Big Z, little Z, what begins with Z? I do.I’m a zizzer zazzer zuzz, as you can plainly see.“

— Dr. Seuss
„If A is success in life, then A = x + y + z. Work is x, play is y and z is keeping your mouth shut.“
— Albert Einstein
„And at last we've got to the end of this ideal racecourse! Now that you accept A and B and C and D, of course you accept Z.""Do I?" said the Tortoise innocently. "Let's make that quite clear. I accept A and B and C and D. Suppose I still refused to accept Z?""Then Logic would take you by the throat, and force you to do it!" Achilles triumphantly replied. "Logic would tell you, 'You can't help yourself. Now that you've accepted A and B and C and D, you must accept Z!' So you've no choice, you see.""Whatever Logic is good enough to tell me is worth writing down," said the Tortoise. "So enter it in your notebook, please. We will call it(E) If A and B and C and D are true, Z must be true.Until I've granted that, of course I needn't grant Z. So it's quite a necessary step, you see?“
— Lewis Carroll
„In the places I go there are things that I seeThat I never could spell if I stopped with the Z.“
— Dr. Seuss
„Logic will get you from A to Z; imagination will get you everywhere.“
— Albert Einstein
„Strictly 4 My N. I. G. G. A. Z“
— Tupac Shakur
„In the places I go there are things that I seeThat I never could spell if I stopped with the Z.I'm telling you this 'cause you're one of my friends.My alphabet starts where your alphabet ends!“
— Dr. Seuss
„Who said anything about slicing you up?… I just wanted to carve a little Z on your forehead-- nothing serious.“
— Hunter S. Thompson
„So, on beyond Z!It's high time you were shownThat you really don't knowAll there is to be known.“
— Dr. Seuss