Humanity will find in itself the power to live for virtue even without believing in immortality. It will find it in love for freedom, for equality, for fraternity.
 Fyodor Dostoyevsky, The Brothers Karamazov (1880). copy citation

Context

“Not for scoundrels, but for pedantic poseurs , ‘haunted by profound, unsolved doubts.’ He's showing off, and what it all comes to is, ‘on the one hand we cannot but admit’ and ‘on the other it must be confessed!’ His whole theory is a fraud! Humanity will find in itself the power to live for virtue even without believing in immortality. It will find it in love for freedom, for equality, for fraternity. “ Well, that's enough, ” he said, with a still more crooked smile. “ Why are you laughing? Do you think I'm a vulgar fool? ” “ No, I never dreamed of thinking you a vulgar fool. You are clever but ... never mind, I was silly to smile.” source