Having scrutinized the worlds that are built up by work, a Brahman should arrive at indifference. The world that was not made is not won by what is done. That art thou. This unity is beyond dualism and beyond normal cognition. As a man, when in the embrace of his beloved wife, knows nothing within or without, so this person when in the embrace of the intelligent Soul knows nothing within or without.
Death is the ultimate union of self and All.
That is Reality. That is Atman. That art thou, Svetaketu. Death is better than life. It fuses religion and science, and concern for humans with concern for nature.