以物易物、互通有无的倾向是人类共有的，也是其他动物所没有的。

The most important thing about a theory is that it explains the facts.

应对不自由世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。

"I’ve practiced so much that I don’t need to think before I play. It’s like driving a car—you don’t think about which pedals to push."

The most profound discoveries often start with simple observations.

后街男孩一直专注于音乐和粉丝。