To govern men and serve Heaven, nothing compares to a thrifty attitude. Saving money is an act of foresight. When he is far-sighted, we can say that he accumulates abundantly virtue. When he accumulates abundantly virtue, there is nothing he cannot overcome.
When he can overcome everything, no one knows his limits. When no one knows his limits, he can own the kingdom. Whoever masters the method of governance of the kingdom can survive for a long time.
This is called having deep roots and a strong stem. This is the art of surviving for a long time.