Look at this window: it is nothing but a hole in the wall, but because of it the whole room is full of light. So when the faculties are empty, the heart is full of light. Being full of light it becomes an influence by which others are secretly transformed.
Because of my blindness, I had developed a new faculty. Strictly speaking, we all have it, but almost all forget to use it. That faculty is attention. In order to live without eyes it is necessary to be very attentive, to remain hour after hour in a state of wakefulness, of receptiveness and activity. Indeed, attention is not simply a virtue of intelligence or the result of education, and something one can easily do without. It is a state of being . . . a state without which we shall never know wholeness. In its truest sense it is the listening post of the universe.
~ from AGAINST THE POLLUTION OF THE I by Jacques Lusseyrann