"I am happy that women can relate to my songs, and hopefully men can too"

"Ah, women. They make the highs higher and the lows more frequent"

"Modesty is a quality in a lover more praised by the women than liked"

"I feel happy to terrify kids"

"Women are responsible for their children, they cannot sit back, waste time and see them starve"

"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"

"Men marry because they are tired; women, because they are curious; both are disappointed"

"Happiness is the only good. The time to be happy is now. The place to be happy is here. The way to be happy is to make others so"

"Happy is the person who knows what to remember of the past, what to enjoy in the present, and what to plan for in the future"

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