From Self-Development and the Way to Power, by L. W. Rogers (3)

Why does death bring misery? Chiefly because it separates us from
those we love. But when we have evolved the faculty of clairvoyance,
in our work of self-development, the separation vanishes and our
"dead" friends are as much with us as the living. The only other
reason why death brings grief or fear is because we do not understand
it and comprehend the part it plays in human evolution. But the moment
our ignorance gives way to comprehension such fear vanishes and a
serene happiness takes its place.