“What Is Art? itself is a work of science, though many passages, and even some whole chapters, appeal to us as works of art and we feel the contagion of the author’s hope, his anxiety to serve the cause of truth and love, his indignation (sometimes rather sharply expressed) with whatever blocks the path of advance, and his contempt for much that the ‘cultured crowd,’ in our erudite, perverted society, have persuaded themselves, and would fain persuade others, is the highest art.”