All great events hang by a single thread. The clever man takes advantage of everything, neglects nothing that may give him some added opportunity; the less clever man, by neglecting one thing, sometimes misses everything.

The man who is truly wise knows that he knows very little.

The wise man admires water, the kind man admires mountains. The wise man moves, the kind man rests. The wise man is happy, the kind man is firm.

The wise man should restrain his senses like the crane and accomplish his purpose with due knowledge of his place, time and ability.

Do not reveal what you have thought upon doing, but by wise council keep it secret being determined to carry it into execution.

If a problem is fixable, if a situation is such that you can do something about it, then there is no need to worry. If it's not fixable, then there is no help in worrying. There is no benefit in worrying whatsoever.