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

One must not criticize that which is common since it remains always the same.

He alone deserves liberty and life who daily must win them anew.

The person who in shaky times also wavers only increases the evil, but the person of firm decision fashions the universe.

No one knows what he is doing so long as he is acting rightly; but of what is wrong one is always conscious.

A really great talent finds its happiness in execution.

Every solution of a problem is a new problem.