"Be happy with what you have and are, be generous with both, and you won't have to hunt for happiness"

"I feel happy to terrify kids"

"The man who makes everything that leads to happiness depends upon himself, and not upon other men, has adopted the very best plan for living happily. This is the man of moderation, the man of manly character and of wisdom"

"There is only one person who could ever make you happy, and that person is you"

"I was married to Margaret Joan Howe in 1940. Although not a scientist herself she has contributed more to my work than anyone else by providing a peaceful and happy home"

"Happiness is not a state to arrive at, but a manner of traveling"

"Action may not always bring happiness; but there is no happiness without action"

"Happiness is where we find it, but rarely where we seek it"

"Happiness depends more on the inward disposition of mind than on outward circumstances"

"No man is happy who does not think himself so"

"Happiness does not consist in pastimes and amusements but in virtuous activities"