Appreciative joy seems to emerge most easily and effectively from that which we cannot own and possess. On one of those long, warm, lingering summer days, we observe children playing with a balloon in the park. They are running around, jumping up and down, keeping the balloon in the air. They are not our children. We know the experience is momentary. We didn't come to the park looking for such an experience. It just arose in the natural scheme of things. We experience a joy at their playfulness, at their running up and down, as the balloon floats across the park.
— Christopher Titmuss, Light on Enlightenment