“No two days are alike, nor even two hours; neither were there ever two leaves of a tree alike since the creation of all the world; and the genuine productions of art, like those of nature, are all distinct from each other,” British landscape painter John Constable said.
Constable referred to nature’s only constant: change. An academic art studio can never simulate the way the light falls on the land at a particular time of day. Artists needed to go out and study nature for themselves.