A gem is not polished without rubbing, nor a man perfected without trials.

To forget one’s ancestor’s is to be a brook without a source, a tree without root .

Thus, what is of supreme importance in war is to attack the enemy’s strategy.

Victorious warriors win first and then go to war, while defeated warriors go to war first and then seek to win.

If you stand straight, do not fear a crooked shadow.

Deal with the faults of others as gently as with your own.

If you don’t want anyone to know, don’t do it.

Better to light a candle than to curse the darkness.

You cannot prevent the birds of sadness from passing over your head, but you can prevent their making a nest in your hair .

Do not confine your children to your own learning, for they were born in another time.

Teachers open the door but you must walk through it yourself.

Be not afraid of going slowly, be afraid only of standing still.

A gem cannot be polished without friction, nor a man perfected without trials.

To talk much and arrive nowhere is the same as climbing a tree to catch a fish .

Kissing is like drinking salted water: you drink and your thirst increases .

If heaven made him, earth can find some use for him.