There's a possibility that I'm wrong." "That's the first rational thing you've said. - Mike Resnick

Look," said Chandler. "Either we've got free will or we don't. If we do, then we are doing the right thing. If we don't, then we can't do anything else, anyway. So what's the point of worrying about it?"
"Because we can stop right now if we decide to."
He smiled. "And how will you know that the Oracle didn't change her mind and choose a future in which we stopped?"
She wearily leaned back on the chair. "Where does it end?"
"Second guessing fate?" asked Chandler. "Never. That's why it's a good idea not to start.

Have you ever done anything, even once, with no thought of a return?" he asked.
"Yes."
"How old were you? Six?"
"Younger. And I immediately decided that there was no percentage in it.

I also destroyed a man who was in serious need of destruction," replied Cain. "On the whole, I'd say the ledger came out on the plus side."
"There wasn't even any paper on Socrates."
"Then view killing him as a service to humanity."
"I wasn't aware that you were in the philanthropy business," said the Swagman.
"There are more important things than money," said Cain.
"True—but all of them cost money.