可持续发展不仅需要愿景，还需要具体行动。

Monsters are real, and ghosts are real too. They live inside us, and sometimes, they win.

让我们陷入困境的不是无知，而是看似正确的谬误论断。

We are all cut from the same genetic cloth, and that cloth was woven in Africa.

我试图摆脱那些自信满满地回答自己并不真正了解的问题的人。

数学的本质在于它的自由。