I look up to heaven only when I want to sneeze.

The temerity to believe in nothing.

I don't see why it's impossible to express everything that's on one's mind.

Nature is not a temple, but a workshop, and man's the workman in it.

Death is like a fisherman, who, having caught a fish in his net, leaves it in the water for a time; the fish continues to swim about, but all the while the net is round it, and the fisherman will snatch it out in his own good time.

Who among us has the strength to oppose petty egoism, those petty good feelings, pity and remorse?

I agree with no one's opinion. I have some of my own.