My translation of Chapter 46 of Tao Te Ching:
If society is run according to Tao,
Horses will have nothing to do but eat and defecate.
If society is not run according to Tao,
Pregnant war horses will have to give birth in the field.
The greatest misfortune is caused by discontent;
The greatest trouble is due to covet.
Therefore be contented with what you have
And you will be contented at all time.
Paul’s comment: The Taoist concept of “be contented with what you have”, and its variant "content and always happy" (知足常樂），has become a core component of traditional Chinese culture.