All truths are easy to understand once they are discovered; the point is to discover them.
We cannot teach people anything; we can only help them discover it within themselves.
I have never met a man so ignorant that I couldn't learn something from him.
I think that in the discussion of natural problems we ought to begin not with the Scriptures, but with experiments, and demonstrations.
It is surely harmful to souls to make it a heresy to believe what is proved.