Only he who finds empiricism irksome is driven to method.

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.

Hypotheses are lullabies for teachers to sing their students to sleep.

Most men, even the most accomplished, are of limited faculties; every one sets a value on certain qualities in himself and others: these alone he is willing to favour, these alone will he have cultivated.

All is born of water; all is sustained by water.

Art is in itself noble; that is why the artist has no fear of what is common. This, indeed, is already ennobled when he takes it up.

In the end we retain from our studies only that which we practically apply.