Some we see: some we are permitted to see: some we permit ourselves to see. Some we do not see: some we are not permitted to see: some we do not permit ourselves to see. Habitually I do not see that which I should see; occasionally I see what I should not. Or seeing I do not believe, but not seeing I do believe; or believing I therefore see, and not believing manage therefore not to see.
Is there a country where it is against the law to see the color red? Is there a group of like-minded people who see only shadows? Is there a network that broadcasts only black?