My politics were those of prophylaxis, my opponents preferred those of palliation.

As long as vitalism and spiritualism are open questions so long will the gateway of science be open to mysticism.

Body: A cell state in which every cell is a citizen.

Life itself is but the expression of a sum of phenomena, each of which follows the ordinary physical and chemical laws.

The task of science, therefore, is not to attack the objects of faith, but to establish the limits beyond which knowledge cannot go and found a unified self-consciousness within these limits.

The task of science is to stake out the limits of the knowable, and to center consciousness within them.

Brevity in writing is the best insurance for its perusal.