[W]hat counts is that one perceives excellence and dares to give it expression, which sounds little but is in fact a great deal.

Nothing is more terrible than to see ignorance in action.

We all walk in mysteries. We are surrounded by an atmosphere about which we still know nothing at all.

I am proud of my heart alone, it is the sole source of everything, all our strenght, happiness & misery. All the knowledge I possess everyone else can acquire, but my heart is all my own

One is never satisfied with the portrait of a person that one knows.

The greater the knowledge, the greater the doubt.

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.