This definition involves two central dimensions of compassion. The first is known as the psychology of engagement and involves sensitivity to and awareness of the presence of suffering and its causes.
Clifford C. Cliff Clavin, Jr. (born 1947 or 1949), is a fictional character on the American television show Cheers co-created (and played) by John Ratzenberger. A postal worker, he is the bar's know-it-all and was a contestant on the game show Jeopardy!
Trivia (29). Although he later played Frasier's father Martin Crane on Frasier (1993), John Mahoney appeared on a 1992 episode of Cheers (1982) as a pianist who was hired to write a jingle for the bar. Lost his English accent after he joined the U.S. Army.