Lust, Greed, Anger, Attachment - These are all paths to hell.
Whatever may be guru - he may be a lunatic or a common person. Once you have accepted him, he is the lord of lords.
Love everyone, serve everyone, remember God, and tell the truth.
See God in everyone. It is deception to teach by individual differences and karma.
It's better to see God in everything than to try to figure it out.
Love all, serve all, feed all.