Francis of Assisi, Lao Tzu, Gurdjieff (yes, really), Blavatsky (yes), Zhang Guolao, Nasreddin, Jesus of Nazareth.. These last three all have been known to ride a donkey backwards.
I would guess you're being sarcastic, but it depends on your worldview I suppose. I haven't found any of his writing to be insightful or even entertaining.
I mean, if we're including Blavatsky, then we probably need to include Crowley (even though he'd have been very upset to be added to this company).