不以法推行法度，则国事没有常规，办事的时候就没有规矩可循；法度不用法的手段推行，则政令不能贯彻。
The essence of mathematics lies in its freedom.
We must eradicate from the soul all fear and terror of what comes towards us out of the future.
The inflationary universe model suggests that the universe expanded exponentially in the first fraction of a second after the Big Bang.