Though Murray criticizes Marcus for the "harshness and plainness of his literary style", he finds in his Meditations "as much intensity of feeling...as in most of the nobler modern books of religion, only [with] a sterner power controlling it." "People fail to understand Marcus," he writes, "not because of his lack of self-expression, but because it is hard for most men to breathe at that intense height of spiritual life, or, at least, to breathe soberly."