Talk is by far the most accessible of pleasures. It costs nothing in money, it is all profit, it completes our education, founds and fosters our friendships, and can be enjoyed at any age and in almost any state of health.
Two prisoners whose cells adjoin communicate with each other by knocking on the wall. The wall is the thing which separates them but is also their means of communication. It is the same with us and God. Every separation is a link.