Rhythm by Edgar Payne in Composition of Outdoor Painting
Rhythm comes mainly from a receptive state of mind, which is usually brought about by what is seen and felt. When viewing the various aspects of nature we find that which coincides with our own moods, or this may be the other way around: the scene may create the mood. To enjoy nature and its depiction, the viewer needs to be in tune with her. Being in tune does not mean that individuality is surrendered. This must be preserved if full and complete rhythm, unity and enjoyment are to be realized. To feel the spirit of nature is to feel the rhythmic, spiritual flow which encircles animate and inanimate nature--the rhythm of life and the universe.