The will to learn is an intrinsic motive, one that finds both its source and its reward in its own exercise.

文学是一种记忆，是对过去的回顾。

The only way to learn mathematics is to do mathematics.

经济增长的过程不是平稳和连续的；它以突飞猛进和停顿为标志。

Precision in science requires both rigor and creativity.

The love of democracy is that of equality.

我既找不到一个完全献身于我的朋友，我就必须有些能以其推动力克服我的惰性的朋友。