One cannot explain words without making incursions into the sciences themselves, as is evident from dictionaries; and, conversely, one cannot present a science without at the same time defining its terms.

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

To love is to be delighted by the happiness of someone, or to experience pleasure upon the happiness of another. I define this as true love.

Of what use would it be to you, sir, to become King of China on condition that you forgot what you have been? Would it not be the same as if God, at the same time he destroyed you, created a King in China?

There is nothing waste, nothing sterile, nothing dead in the universe; no chaos, no confusions, save in appearance.

I have said more than once, that I hold space to be something purely relative, as time; an order of coexistences, as time is an order of successions.

It is a good thing to proceed in order and to establish propositions. This is the way to gain ground and to progress with certainty.