The most important single aspect of software development is to be clear about what you are trying to build.

We are all afraid—for our confidence, for the future, for the world.

To write is to exorcise the demons that live within us.

挑战不在于代表非洲，而在于呈现非洲的复杂性。

活着就是拥抱未来的不确定性。

We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

The only source of knowledge is experience.

"The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'"