不偏之谓中,不易之谓庸。中者,天下之正道;庸者,天下之定理。
不偏不倚叫做中,不改变叫做庸。中是天下正确的道路,庸是天下不变的法则。
The office of President is one which requires the utmost diligence and attention.
Sometimes the hardest thing in life is to know which bridge to cross and which to burn.