Die Mathematik ist das Organ, mit welchem wir die Erscheinungen der Natur begreifen.
Mathematics is the organ with which we comprehend the phenomena of nature.
恐惧是强大的动力,但它也是个骗子。
Happiness is beneficial for the body, but it is grief that develops the powers of the mind.
"Education is the most powerful weapon which you can use to change the world."