Mathematics is the poetry of logical ideas.

The true revolutionary is guided by a great feeling of love. It is impossible to think of a genuine revolutionary lacking this quality.

如果你没有犯错，说明你不够努力。

A building must be honest in its materials and construction.

在苦难时回忆幸福是最深的痛苦。

我不是圣人，但我也不是罪人。

自然从不陷入单纯的重复，每个个体都是新的变体。