So very difficult a matter is it to trace and find out the truth of anything by history.

So also it is good not always to make a friend of the person who is expert in twining himself around us; but, after testing them, to attach ourselves to those who are worthy of our affection and likely to be serviceable to us.

I had rather men should ask why my statue is not set up, than why it is.

Lying is a most disgraceful vice; it first despises God, and then fears men.

When a man's struggle begins within oneself, the man is worth something.

What All The World Knows Water is the principle, or the element, of things. All things are water.

This excerpt is presented as reproduced by Copernicus in the preface to De Revolutionibus: "Some think that the earth remains at rest. But Philolaus the Pythagorean believes that, like the sun and moon, it revolves around the fire in an oblique circle. Heraclides of Pontus and Ecphantus the Pythagorean make the earth move, not in a progressive motion, but like a wheel in rotation from west to east around its own center."