Mental processes are tools for living, and their worth is in their use.

森林的真正价值不能仅用板英尺来衡量。

I am obsessed with the idea of eternity.

There is no friend as loyal as a book.

"We look at the world once, in childhood. The rest is memory."

You're in control, is there anywhere you wanna go?

The key to success is not just technology, but how you use it to solve real problems.

The only religious way to think of death is as part and parcel of life.

一个行为的后果会影响它再次发生的概率。