学习是系统中产生的任何变化，这种变化或多或少会永久性地改变其适应环境的能力。

I love my fans more than anything in the world.

Science is a journey, not a destination.

We're not asking people to give up anything. We're giving them something better.

Think wrongly, if you please, but in all cases think for yourself.

The past is always a rebuke to the present.

我们都是潜在的化石，仍然携带着我们过去的痕迹。