Essentials for keeping a good health
Man's life is limited but knowledge is unlimited.To pursue the unlimited with the limited is fatiguing； to know this but still pursue unlimited knowledge with limited life is fatal.
When you do good,don't do it for the sake of fame； when you do bad,don't do it as to incur punishment .If you always keep to the proper way,you will be able to keep a good health ,preserve your nature,support your parents and live out your full life span.
