You will find that Donovan was copied by Dylan in this and all his other songs. Donovan also wrote all of Elgar's Enigma Variations and the whole of Robert Burns oeuvre was stolen by the bard from Donovan's digs in Dumfries. Burns then passed it off as his own work. Cheatin' barsteward.

At least that's what wee Leitch says. :)

He also taught Braveheart all he knew about about swordsmanship and singlehandedly won the University boat race without a cox. Quite a guy.