Something deeply hidden had to be behind things.
阅读是不动身的旅行;写作是不旅行的移动。
The past is a foreign country; they do things differently there.
If you are really in love, you talk with your eyes.
控制的挑战在于在存在不确定性的情况下使系统工作。
对自然的研究是与最高智慧的交流。