Science is my passion; politics, my duty.

Politics and Religion are obsolete. The time has come for Science and Spirituality.

An empty stomach is not a good political adviser.

The only justifiable purpose of political institutions is to ensure the unhindered development of the individual.

I have just got a new theory of eternity.

Our present work sets forth mathematical principles of philosophy. For the basic problem of philosophy seems to be to discover the forces of nature from the phenomena of motions and then to demonstrate the other phenomena from these forces. It is to these ends that the general propositions in books 1 and 2 are directed, while in book 3 our explanation of the system of the world illustrates these propositions.