In the Book of Poetry there are three hundred poems, but the meaning of all of them may be put in a single sentence: Have no debasing thoughts.
Wherever you go, go with all your heart.
Do not unto another that you would hot have him do unto you. Thou needest this law alone. It is the foundation of all the rest.
If either wealth or poverty are come by honesty, there is no shame.
To study and not think is a waste. To think and not study is dangerous.
The gem cannot be polished without friction nor man without trials.