Nisargadatta Maharaj

 All that a guru can tell you is:

  My dear Sir, You are quite mistaken about yourself. You are not the person you think yourself to be. Trust no one, not even yourself. Search, find out, remove and reject every assumption till you reach the living waters and the rock of truth. Until you are free of the drug, all your religions and sciences, prayers and yogas are of no use to you, for based on a mistake, they strengthen it. But if you stay with the idea that you are not the body nor the mind, not even their witness, but altogether beyond, your mind will grow in clarity, your desires—in purity, your actions—in charity. And that inner distillation will take you to another world, a world of truth and fearless love.