“Those of us who have been studying Advaita Vedanta, the non-duality concepts, have come across the one principle of Advaita and remember it intellectually. The one principle being, ‘Everything is Brahman. The whole universe is Brahman. Only Brahman exists and this world that appears to you is a hallucination.’ You’re hallucinating by believing the world is real. Non-dualists understand this, they realize this.
And yet some people have a hard time in grasping the truth of this, what this really means. Brahman cannot be explained. It is beyond words and thoughts, there is no valid explanation for Brahman. You can only know Brahman when you leave your senses behind. When you go out of your mind. This is the only time when you will know Brahman.
So when somebody tells you you’re out of your mind say, ‘Thank you.’ It’s a compliment. You want to be out of your mind. It’s no fun being in your mind. For in your mind you relate to the world. You relate to person, place and thing. So you want to be out of the mind, totally out of the mind. “
~ Robert Adams (20th century American Advaita mystic)