Full Idea
Possible objects of deep happiness seem to be things that are basic in human life, such as home, and family, and work, and friendship.
Gist of Idea
Deep happiness usually comes from the basic things in life
Source
Philippa Foot (Natural Goodness [2001], 6)
Book Reference
Foot,Philippa: 'Natural Goodness' [OUP 2003], p.88
A Reaction
I've not encountered discussion of 'deep' happiness before. I heard of an old man in tears because he had just seen a Purple Emperor butterfly for the first time. She makes it sound very conservative. How about mountaineering achievements?