How should I know anything about another world when I know so little of this?
If you look into your own heart, and you find nothing wrong there, what is there to worry about? What is there to fear?
Do not use a cannon to kill a mosquito.
As the water shapes itself to the vessel that contains it, so a wise man adapts himself to circumstances.
Learning without thought is labour lost.
In a district of ten families, there must be someone as honorable and sincere as I, but none as fond of learning.