Settle one difficulty, and you keep a hundred away.
Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.
The parents age must be remembered, both for joy and anxiety.
By the ruler's cultivation of his own character there is set up the example of the course which all should pursue.
Faced with what is right, to leave it undone shows a lack of courage.
A reasonable man adjusts himself to the world. An unreasonable man expects the world to adjust itself to him. Therefore all progress is made by unreasonable people.