When the world has the Way,
running horses are retired to till the fields.
When the world lacks the Way,
warhorses are bred in the countryside.
There is no greater loss than losing the Tao,
no greater curse than covetousness,
no greater tragedy than discontentment;
the worst of faults is wanting more - always.
Contentment alone is enough.
Indeed, the bliss of eternity
can be found in your contentment.
-Tao Te Ching
Version from Change Your Thoughts-Change Your Life
by Wayne Dyer.