Learning without thought is labor lost; thought without learning is perilous.

Act with kindness but do not expect gratitude.

The hardest thing of all is to find a black cat in a dark room, especially if there is no cat.

There is one word which may serve as a rule of practice for all one's life -reciprocity.

Heaven, in the production of things, is sure to be bountiful to them, according to their qualities. Hence the tree that is flourishing, it nourishes, while that which is ready to fall, it overthrows.

When the Superior Man eats he does not try to stuff himself; at rest he does not seek perfect comfort; he is diligent in his work and careful in speech. He avails himself to people of the Tao and thereby corrects himself. This is the kind of person of whom you can say, "he loves learning."

In your promises cleave to what is right, And you will be able to fulfill your word.