You can't change the past, but you can create the future.

The joy of mathematics comes from the struggle to understand.

译文：女权不能让平庸的人占据，对于不同种族的人勾结在一起只能空自叹息。

The individual has become a mere cog in an enormous organization of things and powers which tear from his hands all progress, spirituality, and value in order to transform them from their subjective form into the form of a purely objective life.

Don't look for the needle in the haystack. Just buy the haystack!

地球上有黑暗的阴影，但相比之下光明更强大。

The most ordinary life can be extraordinary when seen through the right eyes.

过去已成过去，但未来是一张白纸。