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

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.

There can be no scientific dispute with respect to faith, for science and faith exclude one another.

Belief has no place as far as science reaches, and may be first permitted to take root where science stops.

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

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

Medicine is a social science, and politics is nothing else but medicine on a large scale. Medicine, as a social science, as the science of human beings, has the obligation to point out problems and to attempt their theoretical solution: the politician, the practical anthropologist, must find the means for their actual solution. The physicians are the natural attorneys of the poor, and social problems fall to a large extent within their jurisdiction.