1. A gentleman who is vigorous in nature should strive to improve himself. As long as they didn't lose their direction, they wouldn't lose themselves. 3. Heroes show, talents show, fools show. The objective law of the development of things is that it always develops towards the bright side. Without saliva and sweat, there would be no tears of success. Time is a constant but also a variable. There are many diligent people and few lazy people. It is the most pathetic failure to defeat yourself. It is the most precious victory to defeat yourself. It is not a good scholar to be studious but not diligent in asking questions.