"Ever tried. Ever failed. No matter. Try again. Fail again. Fail better."
"Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. That's relativity."
"I have not failed. I've just found 10,000 ways that won't work."
"A mathematician is a device for turning coffee into theorems."
"Never interrupt your enemy when he is making a mistake."
"If you are going through hell, keep going."
"It's kind of fun to do the impossible."
"Be nice to people on your way up because you meet them on your way down."
"Behind every great fortune there is a crime."
"You can get more with a kind word and a gun than you can with a kind word alone."
"The object of war is not to die for your country but to make the other bastard die for his."
"Logic will get you from A to B. Imagination will take you everywhere."
"Art is a lie that makes us realize truth."
"Don't cry because it's over. Smile because it happened."
"Live as if you were to die tomorrow. Learn as if you were to live forever."
"If you can't explain it simply, you don't understand it well enough."
"They have a saying in Chicago: 'Once is happenstance, twice is coincidence, the third time it's enemy action.'"
"Television will never be a serious competitor for radio because people must sit and keep their eyes glued to a screen; the average American family hasn't time for it."
"If we can't find something pleasant, we will at least find something new."
"Who dares, wins."
"Si vis pacem, para bellum" ("If you want peace, prepare for war").
"Failure is not an option."