The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.
如果没有传统农业知识的智慧，农业中最先进的技术也是无用的。
译文：山间的溪水容易上涨和退却，小人的心思容易反反复复。赏析：君子胸怀坦荡，光明磊落，真诚待人，和君子相处，如沐春风，让人心旷神怡。而小人心胸狭窄，鸡肠鼠肚，睚眦必报，和小人交往，无异于和豺狼同行。
Good science requires both creativity and discipline.
A person who makes no mistakes usually doesn’t make anything.