并非不可能，未来还会发明出更多辅助视觉的工具，它们超越现有工具的程度，就像现有工具超越肉眼一样。

人们之所以会错过最伟大的突破，就是因为它们看上去就很难。

The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.

你的快乐不在于城市的七十个奇迹，而在于它对你的一个问题所给出的答案。

如果你无法简单地解释它，说明你理解得还不够透彻。