Quote by George Harrison

It's being here now that's important. There's no past and there's no future. Time is a very misleading thing. All there is ever, is the now. We can gain experience from the past, but we can't relive it; and we can hope for the future, but we don't know if there is one.

Please suggest source details if you know: book, page, year, online article address (url), correction (different author...), etc.. Thanks.