After all, it’s sad that a beautiful moment passes and vanishes forever, that you can’t stash it away for permanent safekeeping! But it’s the kind of sadness that might otherwise be described as “poignancy”: a feeling that deepens the experience you’re having, rather than detracting from it. The kind of feeling you get once you’re no longer grasping and clutching at the moment – thereby, ironically, driving it further away from you – but stepping fully into it, experiencing yourself as a part of it, being it.