Again, both literature and philosophy work by appealing to certain reigning idols.

Lastly, literature and philosophy both allow past idols to be resurrected with a frequency which would be truly distressing to a sober scientist.

Wisdom is not to be obtained from textbooks, but must be coined out of human experience in the flame of life.

Let philosophy resolutely aim to be as scientific as possible, but let her not forget her strong kinship with literature.

Liberalism regards life as an adventure in which we must take risks in new situation, in which there is no guarantee that the new will always be the good or the true, in which progress is a precarious achievement rather than inevitability.

Inertia is the first law of history, as it is of physics.

If a philosophic theory is once ruled out of court, no one can tell when it will appear again.