Quote by John Carmack

"Focus is a luxury for people who can afford to give up opportunities."

"The most important thing is the way you fall."

"Ideas are worthless. Execution is everything."

"It is inevitable that we will leave some bugs for the next guy."

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."