One always begins with the simple, then comes the complex, and by superior enlightenment one often reverts in the end to the simple. Such is the course of human intelligence.

The safest course is to do nothing against one's conscience. With this secret, we can enjoy life and have no fear from death.

Among the illusions which have invested our civilization is an absolute belief that the solutions to our problems must be a more determined application of rationally organized expertise... The reality is that our problems are largely the product of that application.

To announce truths is an infallible receipt for being persecuted.

But nothing is more estimable than a physician who, having studied nature from his youth, knows the properties of the human body, the diseases which assail it, the remedies which will benefit it, exercises his art with caution, and pays equal attention to the rich and the poor.

This agglomeration which was called and which still calls itself the Holy Roman Empire was neither holy, nor Roman, nor an empire.

The passions are the winds which fill the sails of the vessel; they sink it at times, but without them it would be impossible to make way.