Life formula from Wozniak

If I died and had all this wealth and yachts and all this stuff, would I be as happy as when I laugh? And I thought about pranks I played and jokes I had told and music I would hear that would make me smile, and I came up with my formula that life is about happiness. Happiness equals smiles minus frowns. H = S – F.

Steve Wozniak (Apple co-founder)