The most stringent protection of free speech would not protect a man in falsely shouting fire in a theater and causing a panic.

Who does not feel that Nansen's account of his search for the Pole rather loses than gains in ideal satisfaction by the pretense of a few trifling acquisitions for science?

The great end of being is to harmonize man with the order of things, and the church has been a good pitch-pipe, and may be so still.

From forty to fifty a man must move upward, or the natural falling off in the vigor of life will carry him rapidly downward.

To have doubted one's own first principles is the mark of a civilized man.

With all humility, I think, "Whatsoever thy hand findeth to do, do it with thy might." Infinitely more important than the vain attempt to love one's neighbor as one's self. If you want to hit a bird on the wing you must have all your will in focus, you must not be thinking about yourself, and equally, you must not be thinking about your neighbor; you must be living with your eye on that bird. Every achievement is a bird on the wing.

I know of no teachers so powerful and persuasive as the little army of specialists. They carry no banners, they beat no drums; but where they are men learn that bustle and push are not the equals of quiet genius and serene mastery.