The laws of electricity are so simple that they can be expressed in a few lines, yet so various that their consequences can never be exhausted.
电的定律如此简单,可以用几行字表达,却又如此多样,其后果永远无法穷尽。
科学的美在于它让我们看到的不是世界的现状,而是它可能的样子。
数学的美在于它允许我们从物理世界中抽象出来,专注于基本原理。