时间不是一条线；它是一个维度，就像空间的维度一样。
Our license to operate depends as much on social acceptance as it does on technical capability.
Every truth goes through three stages: first, it is ridiculed; second, it is violently opposed; third, it is accepted as self-evident.
Never invest in any idea you can't illustrate with a crayon.
A man is a dangerous thing, a man who has nothing to lose is even more dangerous.