What is man?

"What a piece of work is a man, how noble in reason, how
infinite in faculties, in form and moving how express and
admirable, in action how like an angel, in apprehension how like
a god! the beauty of the world, the paragon of animals—and yet,
to me, what is this quintessence of dust?" -- Hamlet, Wm. Shakespeare

Yes, a quintessence of dust,(but) made a little lower than the angels (Psalm 8:4,5; Hebrews 2:6-8) and, in Christ, filled with God's glory, "Christ in you, the hope of glory" (Colossians 1:27).

James Montgomery Boice said in thinking about these verses: If we could see the lowliest believer, as God sees them, we would be tempted to worship them as we beheld their glory.

"What is man, that Thou art mindful of him?"

Indeed. Behold what the Lord has done on our behalf.

And so our hearts are one with the Apostle Paul when he says:

"Rejoice in the Lord alway: and again I say, Rejoice" (Philippians 4:4).