Success is the most natural thing in the world. The person who does not succeed has placed himself in opposition to the laws of the Universe.

Martyrs and persecutors are the same type of man. As to which is the persecutor and which the martyr, this is only a question of transient power.

God looked upon His work and saw that it was good. That is where the clergy take issue with him.

One can play comedy, two are required for melodrama, but a tragedy demands three.

The worst thing about medicine is that one kind makes another necessary

When certain unmarried men, who had lost their capacity to sin, sat indoors, breathing bad air, and passed resolutions about what was right and what wrong, making rules for the guidance of the people, instead of trusting to the natural, happy instincts of the individual, they ushered in the Dark Ages. These are the gentlemen who blocked human evolution absolutely for a thousand years.

All success consists in this: You are doing something for somebody - benefiting humanity - and the feeling of success comes from the consciousness of this.