We must have the real thing before we can have a science of a thing.

Where nature is sovereign, there is no need of austerity and self-denial.

To tell men that they cannot help themselves is to fling them into recklessness and despair.

The best that we can do for one another is to exchange our thoughts freely; and that, after all, is about all.

Men think to mend their condition by a change of circumstances. They might as well hope to escape from their shadows.

Instruction does not prevent wasted time or mistakes; and mistakes themselves are often the best teachers of all.

The practical effect of a belief is the real test of its soundness.