Reason, observation, and experience; the holy trinity of science.

The hands that help are better far than lips that pray.

I have heard them preach, when I sat in the pew and my feet did not touch the floor, about the final home of the unconverted. In order to impress upon the children the length of time they would probably stay if they settled in that country, the preacher would frequently give us the following illustration: 'Suppose that once in a billion years a bird should come from some far-distant planet, and carry off in its little bill a grain of sand, a time would finally come when the last atom composing this earth would be carried away; and when this last atom was taken, it would not even be sun up in hell.' Think of such an infamous doctrine being taught to children!

When you go home you ought to go like a ray of light—so that it will, even in the night, burst out of the doors and windows and illuminate the darkness.

Reason, Observation, and Experience -- the Holy Trinity of Science.

Any doctrine that will not bear investigation is not a fit tenant for the mind of an honest man. Any doctrine that will not bear investigation is not a fit tenant for the mind of an honest man. Any man who is afraid to have his doctrine investigated is not only a coward but a hypocrite.