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!
1 The Cheers theme song was written and performed by Gary Portnoy, and co-written with Judy Hart Angelo.  The Cheers theme lent its famous refrain, Where Everybody Knows Your Name, as the show's tagline.