Galileo Galilei

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.

Beliefs God Intellect

The Bible shows the way to go to heaven, not the way the heavens go.

Beliefs Faith Philosophy

If I were again beginning my studies, I would follow the advice of Plato and start with mathematics.

Education Mathematics Philosophy

All truths are easy to understand once they are discovered; the point is to discover them.

Discovery Knowledge Motivational

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.

Authority Reason Science

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.

Astronomy Nature Productivity

By denying scientific principles, one may maintain any paradox.

Paradox Science