"I never guess. It is a shocking habit—destructive to the logical faculty."

城市人工制品是一件艺术品，也是一份历史文献。

You don't have to have the ability that quantum mechanics requires.You just have to know a few simple things and really know them.

很可能还会发明出其他几种辅助视觉的工具，它们超越现有工具的程度，就像现有工具超越肉眼一样。