Now where there are no parts, there neither extension, nor shape, nor divisibility is possible. And these monads are the true atoms of nature and, in a word, the elements of things.

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

[Alternate translation:] The Divine Spirit found a sublime outlet in that wonder of analysis, that portent of the ideal world, that amphibian between being and not-being, which we call the imaginary root of negative unity.

Music is nothing but unconscious arithmetic.

Nature does not make leaps.

There is a certain destiny of everything, regulated by the foreknowledge and providence of God in His works.

In symbols one observes an advantage in discovery which is greatest when they express the exact nature of a thing briefly and, as it were, picture it; then indeed the labor of thought is wonderfully diminished.