- Jose Bergamin on Happiness
- J. Donald Walters on Happiness
- Thomas Szasz on Happiness
- William Arthur Ward on Happiness
- Agnes Martin on Happiness
- Marcel Proust on Happiness
- Alphonse Karr on Happiness
- Dennis Prager on Happiness
- George A. Sheehan on Happiness
- Napoleon Hill on Happiness
- Ingrid Bergman on Happiness
- Frank McCourt on Happiness
- George Burns on Happiness
- Ogden Nash on Happiness
- Marquis De Sade on Happiness
- Henry Van Dyke on Happiness
- Joseph Wood Krutch on Happiness
- William Bennett on Happiness
- Sarah McLachlan on Happiness
- Bernard Meltzer on Happiness
- Alexandre Dumas on Happiness
- Jourdan Dunn on Happiness
- James Allen on Happiness
- Benjamin Spock on Happiness
- William Butler Yeats on Happiness
- Blaise Pascal on Happiness
- Richard Whately on Happiness
- Stephen Fry on Happiness
- J. Donald Walters on Happiness
- Eleanor Roosevelt on Happiness
- Alice Meynell on Happiness
- Thomas Merton on Happiness
- Daphne Du Maurier on Happiness
- Robert Green Ingersoll on Happiness
- Margaret Lee Runbeck on Happiness
- Immanuel Kant on Happiness
- Thomas Jefferson on Happiness
- Dalai Lama on Happiness
- Ellen Pompeo on Happiness
- Zoe Saldana on Happiness
- Albert Schweitzer on Happiness
- Theodor Adorno on Happiness
- Christopher McCandless on Happiness
- James Van Der Zee on Happiness
- Maurice Maeterlinck on Happiness
- Antonio Gala on Happiness
- Thomas Aquinas on Happiness
- Mary Baker Eddy on Happiness