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.
You cannot teach a man anything; you can only help him discover it in himself.
Doubt is the father of invention.
Where the senses fail us, reason must step in.
By denying scientific principals, one may maintain any paradox.
It is surely harmful to souls to make it a heresy to believe what is proved.
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.
I think that in the discussion of natural problems we ought to begin not with the Scriptures, but with experiments, and demonstrations.
Facts which at first seem improbable will, even on scant explanation, drop the cloak which has hidden them and stand forth in naked and simple beauty.