You cannot teach a man anything; you can only help him find it within himself.
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.
Measure what is measurable, and make measurable what is not so.
I have never met a man so ignorant that I couldn’t learn something from him.
The Bible shows the way to go to heaven, not the way the heavens go.
By denying scientific principles, one may maintain any paradox.
It is surely harmful to souls to make it a heresy to believe what is proved.
All truths are easy to understand once they are discovered; the point is to discover them.
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.
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.