Words are like shadows, and shadows are like words: they say nothing, they only repeat what we want to hear.

Science progresses not just by answering questions, but by asking better ones.

"Un buen libro es aquel que te cambia, aunque sea un poco."

"The future is not a place we are going, but a place we are creating."

最高的奖赏来自于那些人们还不知道叫什么的东西。如果可以的话，去做那些人们还不知道怎么描述的工作。

Small changes can have big effects when they help people break out of the poverty trap.

History does not repeat itself, but it recurs in different forms.

Our modern skulls house a Stone Age mind.