Full Idea
Happiness is a good which once obtained leaves nothing more to be desired.
Gist of Idea
Happiness is a good which once obtained leaves nothing more to be desired
Source
Boethius (The Consolations of Philosophy [c.520], III.I)
Book Reference
Boethius: 'The Consolations of Philosophy', ed/tr. Watts,V.E. [Penguin 1969], p.79
A Reaction
This sounds like the ancient 'eudaimonism' of Socrates and Aristotle, which might not be entirely compatible with orthodox Christianity. It is not true, though, that happy people lack ambition. To be happy, an unfilfilled aim may be needed.