It is the very mark of the spirit of rebellion to crave for happiness in this life

But a scientific man must live in a little bit of style.

It is inexcusable for scientists to torture animals; let them make their experiments on journalists and politicians.

I'm plotting revolution against this lie that the majority has a monopoly of the truth. What are these truths that always bring the majority rallying round? Truths so elderly they are practically senile. And when a truth is as old as that, gentlemen, you can hardly tell it from a lie.

A thousand words will not leave so deep an impression as one deed.

People who don't know how to keep themselves healthy ought to have the decency to get themselves buried, and not waste time about it.

It is no use lying to one's self.