Because the newer methods of treatment are good, it does not follow that the old ones were bad: for if our honorable and worshipful ancestors had not recovered from their ailments, you and I would not be here today.
The Master said, If out of the three hundred songs I had to take one phrase to cover all my teachings, I would say 'Let there be no evil in your thoughts.'
Love others as you would love yourself, judge others as you would judge yourself, cherish others as you would cherish yourself. When you wish for others as you wish for yourself and when you protect others as you would protect yourself, that's when you can say it's true love.
When abroad, behaveto everyone as if interviewing an honored guest; in directing the people, act as if you were assisting at a great sacrafice; DO NOT DO TO OTHERS AS YOU WOULD NOT LIKE DONE TO YOURSELF: so there will be no murmuring against you in the country, and none in the family; your public life will arouse no ill-will nor your private life any resentment.
Therefore only through education does one come to be dissatisfied with his own knowledge, and only through teaching others does one come to realize the uncomfortable inadequacy of his knowledge. Being dissatisfied with his own knowledge, one then realizes that the trouble lies with himself, and realizing the uncomfortable inadequacy of his knowledger.
The Master said, "To study, and then in a timely fashion to practice what you have learned - is this not satisfying? To have companions arrive from afar - is this not a joy? To remain unrecognized by others and yet remain free of resentment - is this not the mark of the gentleman?"