People are difficult to govern because they have too much knowledge.
Activity conquers coldness. Stillness conquers heat.
Whoever is capable of knowing when they have had enough will always be satisfied.
Clay is used to make vases, but it is the emptiness they contain that makes them useful.
To know one's ignorance is the best part of knowledge.
When the people of the world all know beauty as beauty, There arises the recognition of ugliness. When they all know the good as good, There arises the recognition of evil.