Quote #21065
Skepticism means, not intellectual doubt alone, but moral doubt.
Quote #10378
The idea of wilderness needs no defense, it only needs defenders.
Quote #5332
There is no such thing as a natural death: nothing that happens to a...
Quote #32260
When the mind is possessed of reality, it feels tranquil and joyous even without...
Quote #33425
Good soldiers never pass up a chance to eat or sleep. They never know...
Quote #7192
To be intelligent is to be open-minded, active, memoried, and persistently experimental.
Quote #11686
I believe there is no source of deception in the investigation of nature which...
Quote #5086
No one can be a great thinker who does not recognize that as a...
Quote #5665
Have the courage to be ignorant of a great number of things, in order...
Quote #2069
Our best work is done when it needs to be.