In general, therefore, color is a means of exerting a direct influence upon the soul. Color is the keyboard. The eye is the hammer. The soul is the piano with its many strings. The artist is the hand that purposefully sets the soul vibrating by means of this or that key.
Wassily KandinskyAn empty canvas, apparently really empty, that says nothing and is without significance – almost dull, in fact – in reality, is crammed with thousands of undertone tensions and full of expectancy. Slightly apprehensive lest it should be outraged.
Wassily Kandinsky