“I’m a great believer in luck, and I find the harder I work the more I have of it.”

“My advice to you is get married: if you find a good wife you'll be happy; if not, you'll become a philosopher”

“Happiness: a good bank account, a good cook and a good digestion”

“Happy is the one who knows the causes of things”

“A lifetime of happiness! No man alive could bear it: it would be hell on earth”

“Happiness depends upon ourselves”