Sometimes the simplest questions lead to the deepest theories.

时间是我们能够感知变化的唯一维度。

It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.

思考就是将自己局限于一个单一的思想。

创新是解决世界最紧迫问题的关键。