He who cannot love must learn to flatter.

What by a straight path cannot be reached by crooked ways is never won.

Plunge boldly into the thick of life, and seize it where you will, it is always interesting.

Music is liquid architecture; Architecture is frozen music.

A mathematician is only perfect insofar as he is a perfect man, sensitive to the beauty of truth.

Against criticism a man can neither protest nor defend himself; he must act in spite of it, and then it will gradually yield to him.

The master proves himselin recognizing his limitations.