We would never become friends with most if not all of the people with whom we have been friends for many years, if we had met them only a few weeks ago.

Growth is often the cause or the result of pain.

Growing up is childish.

As an unavoidable result of the inevitable loss of some physical and/or some mental abilities, many a man who has been alive for many years has become a boy again.

The degree of our intellectual growth is inversely proportional to the number of people with whom we are still close friends.