Conservatism and old fogeyism are totally different things; the motto of one is "Prove all things and hold fast that which is good" and of the other "Prove nothing but hold fast that which is old."

It is much more important to know what sort of a patient has a disease than what sort of a disease a patient has.

The future belongs to Science. More and more she will control the destinies of the nations. Already she has them in her crucible and on her balances.

Happiness lies in the absorption in some vocation which satisfies the soul.

Half of us are blind, few of us feel, and we are all deaf.

In seeking absolute truth we aim at the unattainable and must be content with broken portions.

Soap and water and common sense are the best disinfectants.