I've grown ever more fascinated with Bowie since it was announced that he had passed. Having listened to his final album and watched the last two videos he made ("Blackstar" and especially "Lazarus"), one most certainly gets the sense that Bowie was not only fully aware of his mortality, but that he was accepting it with a mighty grace. I can't help but think that there is also a sublime acknowledgement toward God in some of the lyrics and images, and that Bowie was surrendering to that.
When I posted about his passing a few days ago, I wrote that perhaps the most amazing thing of David Bowie was how he was not afraid to grow and change as he grew older. That went for him as a showman. But even more importantly, it went for him as a man. The David Bowie of 2016 was not the David Bowie of 1976, and he never pretended to be.
There is a good philosophy in there somewhere.