Someone once said the quote 'Time you've enjoyed wasting hasn't been time wasted at all' was said by John Lennon but I cannot find it anywhere. Is this true?
Yes, but Lennon wasn't necessarily the first person to say it. The quote is also attributed to Bertrand Russell, the eminent British philosopher and mathematician, who died in 1970 - http://www.frecklefoot.net/archivesquotes.html