The only limit to our realization of tomorrow is our doubts of today.
The human mind is a set of information-processing machines that were designed by natural selection to solve adaptive problems faced by our hunter-gatherer ancestors.
A writer is a person who is not satisfied with the world as it is, who wants to change it, to improve it, to make it more beautiful, more just, more livable.
Economic inequality is not just a moral issue; it’s an economic one as well.
I never know what I think about something until I read what I've written on it.
大胆行动，全心全意地投入，连上苍也会受感动。
The pace of change will never be slower than it is today.
当被问及SpaceX连续发生三次故障时