
Earliest instance of this quote found on google books is the 1989 book Forest primeval: the natural history of an ancient forest by Chris Maser, but there it appears to be Maser's own thought (see p. 230 http://books.google.com/books?id=8EAHQM54E5gC&q=%a+mirror% followed by a different supposed Gandhi quote http://books.google.com/books?id=8EAHQM54E5gC&q=gandhi).
Disputed