You cannot teach a man anything; you can only help him find it within himself.

We cannot teach people anything; we can only help them discover it within themselves.

I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.

Where the senses fail us, reason must step in.

I have never met a man so ignorant that I couldn't learn something from him.

The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.