The best time to plant a tree was 20 years ago. The second best time is now.
一个数学家的真正价值在于他们留下的问题。
自由是一种必须每天重新征服的财富。
"A story has no beginning or end: arbitrarily one chooses that moment of experience from which to look back or from which to look ahead."
"The goal is not to mourn the lost futures, but to use them as a resource for the struggle to come."
目标不是哀悼失去的未来，而是将它们用作未来斗争的资源。