There is nothing wrong with retirement as long as one doesn't allow it to interfere with one's work.
Learn of the skillful; he that teaches himself, has a fool for his master.
He that blows the coals in quarrels that he has nothing to do with, has no right to complain if the sparks fly in his face. - Ben Franklin
He that composes himself is wiser than he that composes a book.
He's a fool that makes his doctor his heir.
A new truth is a truth, an old error is an error.