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

Mathematics is the key and door to the sciences.

It is surely harmful to souls to make it a heresy to believe what is proved.

Measure what is measurable, and make measurable what is not so.

Wine is sunlight, held together by water.

Who would dare assert that we know all there is to be known?

See now the power of truth.

You may force me to say what you wish; you may revile me for saying what I do. But it moves.

Nothing occurs contrary to nature except the impossible, and that never occurs.

The laws of nature are written by the hand of God in the language of mathematics.

You can't teach anybody anything, only make them realize the answers are already inside them.

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

Knowing thyself, that is the greatest wisdom.

Two truths cannot contradict one another.

Nonetheless, it moves.

Measure what can be measured, and make measurable what cannot be measured.

There are those who reason well, but they are greatly outnumbered by those who reason badly.

The greatest wisdom is to get to know oneself.

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