Imprisoned quacks are always replaced by new ones.

It is the curse of humanity that it learns to tolerate even the most horrible situations by habituation.

Laws should be made, not against quacks but against superstition.

The body is a cell state in which every cell is a citizen. Disease is merely the conflict of the citizens of the state brought about by the action of external forces.

Cellular pathology is not an end if one cannot see any alteration in the cell. Chemistry brings the clarification of living processes nearer than does anatomy. Each anatomical change must have been preceded by a chemical one.

Belief cannot be reckoned with in terms of science, for science and faith are mutually exclusive.

Medicine is a social science, and politics is nothing more than medicine on a grand scale.