That human existence should repeat itself, well and good, but that it should repeat itself like a hackneyed tune, or a record a drunkard keeps playing as he feeds coins into the jukebox...

Nothing, my dear and clever colleague, is not your run-of-the-mill nothing, the result of idleness and inactivity, but dynamic, aggressive Nothingness, that is to say, perfect, unique, ubiquitous, in other words Nonexistence, ultimate and supreme.

We don't want to conquer the cosmos, we simply want to extend the boundaries of Earth to the frontiers of the cosmos.

Burn with that consuming fire of objectivity that forces a man to renew efforts that are doomed to failure.

Everything is explicable in the terms of the behavior of a small child.

For moral reasons I am an atheist - for moral reasons. I am of the opinion that you would recognize a creator by his creation, and the world appears to me to be put together in such a painful way that I prefer to believe that it was not created by anyone than to think that somebody created this intentionally.

You believe by doubting and you doubt by believing; yet this state too is not the final one.