“Old professors never die, they just lose their faculties.”

“Those who love deeply never grow old; they may die of old age, but they die young.”

“Old habits did not just die hard. They refused to die at all.”

“It is simply this: do not tire, never lose interest, never grow indifferent—lose your invaluable curiosity and you let yourself die. It's as simple as that.”

“It was close; but that's the way it is in war. You win or lose, live or die — and the difference is just an eyelash.”

“A university is what a college becomes when the faculty loses interest in students.”

“You see that old woman? That will never happen to you. You will never grow old, and you will never die.
And it means something else too, doesn't it? I shall never ever grow up.”

“They carry back bright to the coiner the mintage of man,
The lads that will die in their glory and never be old.”

“… every time you lose, you die a little, inside. Not all your organs… maybe just your liver.”

“Truth never triumphs—its opponents just die out.”