Walk up to someone. Stop. Stretch out your hand.
Their eyes will warm, or shift, embrace, turn away or shield them – perhaps all at once, or not at all. Maybe their eyes will still, and you will wonder who they are. You may ask a question and their eyes will dance. They may mourn. You may mourn with them.
Perhaps you will part ways empty.
Likely, you will part full.
This is the art of seeing people.