We have a limit, a very discouraging, humiliating limit: death.

The lunatic is all idée fixe, and whatever he comes across confirms his lunacy. You can tell him by the liberties he takes with common sense, by his flashes of inspiration, and by the fact that sooner or later he brings up the Templars.

I felt like poisoning a monk.

And when someone suggests you believe in a proposition, you must first examine it to see whether it is acceptable, because our reason was created by God, and whatever pleases our reason can but please divine reason, of which, for that matter, we know only what we infer from the processes of our own reason by analogy and often by negation.

libraries are fascinating places: sometimes you feel you are under the canopy of a railway station, and when you read books about exotic places there's a feeling of travelling to distant lands

You don't fall in love because you fall in love; you fall in love because of the need, desperate, to fall in love. when you feel that need, you have to watch your step: like having drunk a philter, the kind that makes you fall in love with the first thing you meet. It could be a duck-billed platypus.

"You cannot believe what you are saying." "Well, no. Hardly ever. But the philosopher is like the poet. The latter composes ideal letters for an ideal nymph, only to plumb with his words the depths of passion. The philosopher tests the coldness of his gaze, to see how far he can undermine the fortress of bigotry."