Illusory joy is often worth more than genuine sorrow.

Common sense is the most widely shared commodity in the world, for every man is convinced that he is well supplied with it.

On the one hand I have a clear and distinct idea of myself, in so far as I am a thinking, non-extended thing; and on the other hand I have a distinct idea of body, in so far a this is simply an extended, non-thinking thing. And, accordingly, it is certain that I am really distinct from my body, and exist without it.

Perfect numbers like perfect men are very rare.

The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once.

And I shall always hold myself more obliged to those by whose favour I enjoy uninterrupted leisure than to any who might offer me the most honourable positions in the world.

Intuitive knowledge is an illumination of the soul, whereby it beholds in the light of God those things which it pleases Him to reveal to us by a direct impression of divine clearness.