The strong will of a general, like the obelisk at the intersection of the main streets of a city, occupies a very prominent position in military art.

1. The steps of a ladder are never used for resting feet. They just let people put their feet for a while so that the other foot can climb up again.

Learning is a hard mental work. First of all, you should be diligent in thinking, then you should be good at thinking, then you should draw inferences from others, and you should be careful. The last and most important step is perseverance, in order to achieve success and master solid knowledge.