No character is ultimately tested until it has suffered.

Some things mankind can finish and be done with, but not ... science, that persists, and changes from ancient Chaldeans studying the stars to a new telescope with a 200-inch reflector and beyond; not religion, that persists, and changes from old credulities and world views to new thoughts of God and larger apprehensions of his meaning.

Every failure can be considered as a tragedy or a chance to learn something. The latter is healthier

Preaching is personal counseling on a group basis.

Men will work hard for money. They will work harder for other men. But men will work hardest of all when they are dedicated to a cause. Until willingness overflows obligation, men fight as conscripts rather than following the flag as patriots. Duty is never worthily performed until it is performed by one who would gladly do more if only he could.

The fact that astronomies change while the stars abide is a true analogy of every realm of human life and thought, religion not least of all. No existent theology can be a final formulation of spiritual truth.

I would rather live in a world where my life is surrounded by mystery than live in a world so small that my mind could comprehend it.