It’s sad that the historical validity of the existence of religious teachers is relied upon in order to appreciate the teachings. Whatever may be the reputation behind a set of words, one could give it a chance at making meaning. Perhaps, the words said have quite significant sense in them in interpreting the experience of life.
An attitude to life that takes the negative and interprets or redirects it positively is quite a valuable one and will get one far. The proverbial dark cloud with a silver lining.