Piety, like nobility, has its aristocracy.

Always to distrust is an error, as well as always to trust.

People should talk less and draw more. Personally, I would like to renounce speech altogether and, like organic nature, communicate everything I have to say visually.

The modern age has a false sense of superiority, because of the great mass of data at its disposal. But the valid criterion of distinction is rather the extent to which man knows how to form and master the material at his command.

When the boy begins to understand that the visible point is preceded by an invisible point, that the shortest distance between two points is conceived as a straight line before it is ever drawn with pencil and paper...the fountain of all thought has been opened to him...the philosopher can reveal him nothing new, as a geometrician he has discovered the basis of all thought.

Make the most of time, it flies away so fast; yet method will teach you to win time.

Some of our weaknesses are born in us, others are the result of education; it is a question which of the two gives us most trouble.