The sovereign good of man is a mind that subjects all things to itself and is itself subject to nothing; such a man's pleasures are modest and reserved, and it may be a question whether he goes to heaven, or heaven comes to him; for a good man is influenced by God Himself, and has a kind of divinity within him.
Seneca the YoungerRetire into yourself as much as possible. Associate with people who are likely to improve you. Welcome those whom you are capable of improving. The process is a mutual one. People learn as they teach.
Seneca the Younger