Most men are of naught more use in their lives but as machines for turning food into sh*t.

Therefore, O students, study mathematics and do not build without foundations.

Oh! Speculators on things, boast not of knowing the things that nature ordinarily brings about; but rejoice if you know the end of those things which you yourself device.

Many have made a trade of delusions and false miracles, deceiving the stupid multitudes.

The body of the earth is of the nature of a fish... because it draws water as its breath instead of air.

The good painter must paint two things: a person and the essence of his soul.

The artist sees what others only catch a glimpse of.