I’ve known about Ram Dass for a long time, but I don’t think I considered his work too much until I stumbled across the book, Polishing The Mirror, which I now consider to be the best spiritual book I’ve ever read. More recently I started reading his newer book, Walking Each Other Home, and the following quote comes from that book.
There is no inherent self — we are boundless. The ego is a structure of mind that organizes the universe, particularly around the relationship to separateness. It is the steering mechanism for you as a separate entity surviving and functioning within this world, on this plane.