A thing is not proved just because no one has ever questioned it. What has never been gone into impartially has never been properly gone into. Hence scepticism is the first step toward truth. It must be applied generally, because it is the touchstone.

All things must be examined, debated, investigated without exception and without regard for anyone's feelings... We must run roughshod over all these ancient puerilities, overturn the barriers that reason never erected, give back to the arts and sciences the liberty that is so precious to them.

The fact is that she was terribly undressed and I was extremely undressed too. The fact is that I still had my hand where she didn't have anything and she had hers where the same wasn't quite true of me. The fact is that I found myself underneath her and consequently she found herself on top of me.

We swallow with one gulp the lie that flatters us, and drink drop by drop the truth which is bitter to us.

Give, but, if possible, spare the poor man the shame of begging.

Fanaticism is just one step away from barbarism.

What a hell of an economic system! Some are replete with everything while others, whose stomachs are no less demanding, whose hunger is just as recurrent, have nothing to bite on. The worst of it is the constrained posture need puts you in. The needy man does not walk like the rest; he skips, slithers, twists, crawls.