One must realize that, apart from considerations of color and form, there are two fundamentally different ways of regarding a medium of expression: one is based on taste only — an approach in which the external physical elements of expression are merely pleasingly arranged. This way results in decoration with no spiritual reaction. Arrangement is not art. The second way is based on the artist's power of empathy, to feel the intrinsic qualities of the medium of expression. Through these qualities the medium comes to life.... In this life, an intuitive artist discovers the emotive and vital substance which makes a work of art.

'Search for the Real in the Visual Arts', p. 46 - Search for the Real and Other Essays (1948)