The following are quotes on seeing, in different contexts.
James Baldwin, in a 1984 interview with Jordan Elgrably at the Paris Review:
I remember standing on a street corner with the black painter Beauford Delaney down in the Village, waiting for the light to change, and he pointed down and said, “Look.” I looked and all I saw was water. And he said, “Look again,” which I did, and I saw oil on the water and the city reflected in the puddle. It was a great revelation to me. I can’t explain it. He taught me how to see, and how to trust what I saw. Painters have often taught writers how to see. And once you’ve had that experience, you see differently.
Annie Dillard, in Pilgrim at Tinker Creek:
But there is another kind of seeing that involves a letting go. When I see this way I sway transfixed and emptied. The difference between the two ways of seeing is the difference between walking with and without a camera. When I walk with a camera I walk from shot to shot, reading the light on a calibrated meter. When I walk without a camera, my own shutter opens, and the moment’s light prints on my own silver gut. When I see this second way I am above all an unscrupulous observer…
The secret of seeing is, then, the pearl of great price. If I thought he could teach me to find it and keep it forever I would stagger barefoot across a hundred deserts after any lunatic at all. But although the pearl may be found, it may not be sought. The literature of illumination reveals this above all: although it comes to those who wait for it, it is always, even to the most practiced and adept, a gift and a total surprise…
I cannot cause light; the most I can do is try to put myself in the path of its beam. It is possible, in deep space, to sail on solar wind. Light, be it particle or wave, has force: you rig a giant sail and go. The secret of seeing is to sail on solar wind. Hone and spread your spirit till you yourself are a sail, whetted, translucent, broadside to the merest puff.
René Magritte, in a 1965 radio interview with Jean Neyens, regarding his 1964 painting The Son of Man:
Everything we see hides another thing, we always want to see what is hidden by what we see. There is an interest in that which is hidden and which the visible does not show us. This interest can take the form of a quite intense feeling, a sort of conflict, one might say, between the visible that is hidden and the visible that is present.