He who exerts his mind to the utmost knows his nature.
All things are complete within ourselves.
Is it only the mouth and belly which are injured by hunger and thirst? Men's minds are also injured by them.
Every duty is a charge, but the charge of oneself is the root of all others.
The feeling of compassion is the beginning of humanity.
By exhaustively examining one's own mind,one may understand his nature.One who understands his own nature understands Heaven.