It is beauty that begins to please, and tenderness that completes the cbarm.

Mathematicians are like lovers. Grant a mathematician the least principle, and he will draw from it a consequence which you must also grant him, and from this consequence another.

It is the passions that do and undo everything.

Behold a universe so immense that I am lost in it. I no longer know where I am. I am just nothing at all. Our world is terrifying in its insignificance.

An educated mind is, as it were, composed of all the minds of preceding ages.

Women react differently: a French woman who sees herself betrayed by her husband will kill his mistress; an Italian will kill her husband; a Spaniard will kill both; and a German will kill herself.

Leibniz never married; he had considered it at the age of fifty; but the person he had in mind asked for time to reflect. This gave Leibniz time to reflect, too, and so he never married.