How do you weigh the air

Question:

how do you weigh  
the air assigned us;
that piece of sky in
our granny’s womb

that transcendental
fowl whose bloodwet
wings fold & unfold
with steady promise

that gate left open
to exquisite pastures
which closes only
once we’ve passed


Answer:

place it inside a poem,
let it float through time

but know: even beyond
the scales have limits