I do not write for myself alone, but for those who cannot speak.

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

Everything is a learning process: any time you fall over, it's just teaching you to stand up the next time.

他思想的勇气与言语的坦率相配。

没有改变就不可能进步，而无法改变思想的人也无法改变任何事。