I am so in favor of the actual infinite that instead of admitting that Nature abhors it, as is commonly said, I hold that Nature makes frequent use of it everywhere, in order to show more effectively the perfections of its Author.

Music is a hidden arithmetic exercise of the soul, which does not know that it is counting.

Music is the pleasure the human mind experiences from counting without being aware that it is counting.

Imaginary numbers are a fine and wonderful refuge of the divine spirit almost an amphibian between being and non-being.

God's relation to spirits is not like that of a craftsman to his work, but also like that of a prince to his subjects.

The world is not a machine. Everything in it is force, life, thought.

The larger the mass of collected things, the less will be their usefulness. Therefore, one should not only strive to assemble new goods from everywhere, but one must endeavor to put in the right order those that one already possesses.