- Glen Hansard on Happiness
- Linus Pauling on Happiness
- Henry Fielding on Happiness
- James Freeman Clarke on Happiness
- Tryon Edwards on Happiness
- Louise Hart on Happiness
- Andre Maurois on Happiness
- Norman Douglas on Happiness
- Irving Babbitt on Happiness
- Eleanor Roosevelt on Happiness
- Giraldus Cambrensis on Happiness
- Chris Webber on Happiness
- Barbara Ehrenreich on Happiness
- Alastair Campbell on Happiness
- Arthur Hiller on Happiness
- Duncan Sheik on Happiness
- Booth Tarkington on Happiness
- David Herbert Lawrence on Happiness
- DJ Jazzy Jeff on Happiness
- Olivia Wilde on Happiness
- Rick Derringer on Happiness
- Nicki Minaj on Happiness
- Oscar Wilde on Happiness
- Dita Von Teese on Happiness
- John Grierson on Happiness
- William Feather on Happiness
- Charles Van Doren on Happiness
- Yevgeny Yevtushenko on Happiness
- Samuel Johnson on Happiness
- Billy Ocean on Happiness
- Napoleon Hill on Happiness
- Bernard Meltzer on Happiness
- H. Jackson Brown, Jr. on Happiness
- Dale Carnegie on Happiness
- Albert Schweitzer on Happiness
- John Dewey on Happiness
- Hosea Ballou on Happiness
- Joseph Addison on Happiness