That is what we are against [the ancient-Greek ideas about art], because that is the key to the classic and tragic finality from which we must free ourselves.
Source, in full
Quote of Mondrian c. 1944, in 'Mondrian in New York: a Memoir', by Carl Holty; 'Arts', Sept. 1957, p. 11; as cited in 'The Aesthetics of Piet Mondrian, by Arthur Chandler; California State University, San Francisco; MSS Information Corporation, New York, 1972