Mathematics is not a spectator sport.

解释：帮助困难的人毫不倦怠，追求善行从不满足。

真正的艺术家永远是无政府主义者。

The only way to save a rhinoceros is to save the environment in which it lives, because there's a mutual dependency between it and millions of other species of both animals and plants.

人类的进步史也就是人类的堕落史；而私有制的确立，是造成人类不平等及其后果的关键。

Science is a collaborative effort. No one makes discoveries alone.