The five spiritual senses are connected.
They’ve grown from one root.
As one grows strong, the others strengthen, too:
each one becomes a cupbearer to the rest.
Seeing with the eye increases speech;
speech increases discernment in the eye.
As sight deepens, it awakens every sense,
so that perception of the spiritual
becomes familiar to them all.
When one sense grows into freedom,
all the other senses change as well.
When one sense perceives the hidden,
the invisible world becomes apparent to the whole.
by Rumi, Mathnawi II, 3236-3241