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

“And say my glory was I had such friends.”

“Every murderer is probably somebody's old friend.”

“The ornament of a house is the friends who frequent it.”

“To find a friend one must close one eye -- to keep him, two.”

“Some people go to priests; others to poetry; I to my friends.”

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

“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.”