Form as a poem’s way of being in the world

From Edward Hirsch’s How To Read Poetry pg 31:

Poems communicate before they are understood and the structure operates on, or inside, the reader even as the words infiltrate the consciousness. The form is the shape of the poem’s understanding, its way of being in the world, and it is the form that structures our experience.

Words move, music moves
Only in time; but that which is only living
Can only die. Words, after speech, reach
Into the silence. Only by the form, the pattern,
Can words or music reach
The stillness, as a Chinese jar still
Moves perpetually in its stillness.

T.S. Eliot, Burt Norton