Quotes by David Starr Jordan

The physiological law of Transfer of Energy is the basis of human success and happiness. There is no action without expenditure of energy, and if energy be not expended the power to generate it is lost. This law shows itself in a thousand ways in the life of man. The arm which is not used becomes palsied. The wealth which comes by chance weakens and destroys. The good which is unused turns to evil. The charity which asks no effort cannot relieve the misery she creates.

"I am not much of a mathematician," said the cigarette, "but I can add to a man's nervous troubles, I can subtract from his physical energy, I can multiply his aches and pains, I can divide his mental powers, I take interest from his work, and discount his chances for success."

There is no real excellence in all this world which can be separated from right living.

Wisdom is knowing what to do next; virtue is doing it.

Be a life long or short, its completeness depends on what it was lived for.

When a dog barks at the moon, then it is religion; but when he barks at strangers, it is patriotism!

Our treatment of animals will someday be considered barbarous. There cannot be perfect civilisation until man realises that the rights of every living creature are as sacred as his own.