Puer and Senex
Archetype
The eternal youth and the old man, the pair of opposites that James Hillman made central to archetypal psychology: flight and gravity, beginning and structure, the spirit that will not land and the order that will not move. The tarot sets them side by side as the Fool and the Emperor.
Cards
The four functions map the suits rather than the trumps; see also the Fool's journey and active imagination.