人类的选择在于自由和幸福之间，而对于大多数人来说，幸福更好。

我知道我是聪明的，因为我自知无知。

We act as though comfort and luxury were the chief requirements of life, when all that we need to make us happy is something to be enthusiastic about.

当被问及SpaceX连续发生三次故障时

Death in itself is nothing; but we fear to be we know not what, we know not where.

最好的领导者是那些倾听多于发言并以诚信行事的人。

The most profound truths are often the ones we deny.

The value chain is the set of activities through which a product or service is created and delivered to customers.