What you can't touch is super-tangible. Think of dreams, shadows, reflections. What light & memory make of our landscapes. A memory of the perfectly ripe: fruit or just-picked ear of corn. All worth hearing; all worth tasting. Poems are like this, too. Tangible -- with the weight of pen & paper and ethereal as the dance of light & memory.
Just ate 2 perfectly ripe small pluots. Life is sweet, I recall.