Since 1962 everyone has known how amazing this song is. If you don't believe me, check out all of the people who have covered it.....
Covered by Joan Baez:
Covered by Peter, Paul, and Mary:
Covered by Johnny Cash:
Covered by Metric:
Elvis Presley, Bobby Darin, Chet Atkins, John Mayer, Donavon Frankenreiter, Nick Drake, Burl Ives, The Allman Brothers, Social Distortion, Tristan Prettyman, and countless others.
Apparently, love (or shall I say, loss of love) needs this sort of song.....