At some point in life the world's beauty becomes enough. You don't need to photograph, paint or even remember it. It is enough. No record of it needs to be kept and you don't need someone to share it with or tell it to. When that happens — that letting go — you let go because you can.
Bio: Oliver Wolf Sacks was a British neurologist, naturalist and author who spent his professional life in the United States. He felt that the brain was the "most incredible thing in the universe" and therefore important to study.