When you see a good person, think of becoming like her/him. When you see someone not so good, reflect on your own weak points.
In old days men studied for the sake of self-improvement; nowadays men study in order to impress other people.
First there must be order and harmony within your own mind.
He who is really kind, can never be unhappy
Time flows away like the water in the river.
Only the wisest and stupidest of men never change.