" Here, I could see, was choice matter on which the expert and art critic could exercise their knowledge and judgment. As I had neither, I made an experiment or two, and was able to inform the readers of the paper that if you walked briskly past the picture, winking both eyes as fast as possible, you really got a sort of impression of movement and activity, of ships and boats coming into the harbour and sailing out of it, of sails lowered and hoisted, of an uncertain background, now obscured, now left visible as a ship in full sail passed before it. It struck me that, in my hands, art criticism was in a fair way to become a popular sport. "
― Arthur Machen , The Terror and Other Stories (The Best Weird Tales of Arthur Machen #3)