"If you want to fly, you have to give up what weighs you down."

我们都是自己选择的总和，也是他人为我们做出的选择的总和。

Ah, make the most of what we yet may spend, Before we too into the Dust descend; Dust into Dust, and under Dust to lie, Sans Wine, sans Song, sans Singer, and—sans End!

物理学的美丽在于它能够用一些基本原理来描述宇宙。