As the glass filled with ice has no room for more water, so the heart, solid needs to melt in the fire of love for it to be as the essence of form.
Breath/Heart dissolves the barriers to learning and knowing. From That Which IS all form is known and available, as from the top of the tree, high from the ground, all is seen. One does not need to study the tree and limbs and grass beneath, for as one rises all is visible below and within.
Satisfied with reading of a far off land, sated with description, one may say many things, but until there is desire to travel followed by the trip and experience of the land, one will not know. And when one does reach this place and explore it well, no longer will the words mean the same; they will describe instead one's knowing.
Intention is the key to capacity. Heart becoming the chalice for Heart, and now leaving even that intention far behind.