It’s not what you look at that matters, it’s what you see.
–Henry David Thoreau
This is a lovely paradoxical way of drawing attention to a very important distinction between different ways of perceiving something. Thoreau points out that one may look at something and still not see it.
I cannot find where this quote comes from, so it may be a misstatement of his actual quote, but if it is a misstatement, I assume the real statement would be even better!