A virtuous man concentrates on his own work, not that of others. Zengzi More Quotes by Zengzi More Quotes From Zengzi Daily, I examine myself in three areas. Have I done my best when doing things for others? Have I been trustworthy in my dealings with my friends? Have I revised the lessons I have been taught? Zengzi three done goal A gentleman makes friends by learning together with others, and he looks to friends to help him cultivate benevolence. Zengzi gentleman together life Filial Piety is the principle of Heaven, The righteousness of Earth, And the (proper) conduct of the people. Zengzi principles heaven people