Without adventure civilization is in full decay.

The race that does not value trained intelligence is doomed.

The vitality of thought is in adventure. Ideas won't keep. Something must be done about them. When the idea is new, its custodians have fervor, live for it, and if need be, die for it.

Error is the price we pay for progress.

No religion can be considered in abstraction from its followers, or even from its various types of followers.

A man really writes for an audience of about ten persons. Of course if others like it, that is clear gain. But if those ten are satisfied, he is content.

No one who achieves success does so without acknowledging the help of others. The wise and confident acknowledge this help with gratitude.