Who said “There is no duty we so much underrated as the duty of being happy.”?

“Rank imposes obligation.”

“Duty cannot exist without faith.”

“I sighed as a lover, I obeyed as a son.”

“Duty largely consists of pretending that the trivial is critical.”

“Possession without obligation to the object possessed approaches felicity.”

“No man is useless while he has a friend.”

“To be wholly devoted to some intellectual exercise is to have succeeded in life.”

“For God's sake give me the young man who has brains enough to make a fool of himself!”

“Our business in this world is not to succeed, but to continue to fail, in good spirits.”

“The world is so full of a number of things, I'm sure we should all be as happy as kings.”

“To be what we are, and to become what we are capable of becoming, is the only end of life.”