You put together two people who have not been put together before; and sometimes the world is changed, sometimes not. They may crash and burn, or they may ignite and light up the sky.

The health of the soil determines the health of the people.

如果人类不能在我有生之年登陆火星，我将会非常失望。

数学发现的过程不是关于到达目的地，而是关于旅程本身。

如果经济学家能够使自己被认为是谦逊的，能干的，与牙医水平相当的人，这是好的。

If you're not moving forward, you're falling behind.

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

阅读好书，就如同与过去几个世纪最杰出的人物交谈。