法律与道德的分离是法律体系的一个必要特征。

The only thing I know is that I don't know anything.

Security is sleeping in the back seat of the car...When you're a little kid, and you've ben somewhere with your Mom and Dad, and it's night, and you're riding home in the car, you can sleep in the back seat...You don't have to worry about anything...Your Mom and Dad are in the front seat, and they do all the worrying...But it doesn't last! Suddenly, you're grown up, and it can never be that way again!

我不害怕电脑，我害怕没有他们。

沉默不仅仅是噪音的缺失；它是一种存在，一个思想可以生长的空间。

The earth's resources are finite, but human ingenuity is not.

你必须先跌倒才能飞翔。