The artist's mind is a turbulent sea full of all kinds of impressions, responses and experiences as well as feelings and emotions. Some experts on art assert that the artist does not really have more of these emotions and feelings and impressions than the ordinary man who is not an artist. This may be true or false, but what they apparently fail to see and assert is that in the artist these feelings and responses are in a more agitated state. He is more concerned with them, and the urge to express these experiences is more intense in him than it is in the ordinary man. And that, I suppose, is the reason why the artist's mind is not only more turbulent but sometimes, alas, troublesome also...
Naum Gabo in "OF DIVERS ARTS"