In his expositions of Holy Scripture he treats of the threefold sense, the literal, the moral, and the mystical, devoting more pains, however, and time to the latter than to the former. He gives special consideration to the mystical interpretation of such passages as may seem to contain in a literal sense anything diverging from sound morality. Many of his other mystical interpretations of plain, simple matters of fact have much beauty, as in his treatment of the story of the building of the ark, the marriage of Isaac, and the blessings of the Patriarchs. The literal sense is followed specially in the Hexaëmeron, the treatise on Paradise, Noah and the Ark, and the Exposition of the Gospel according to St. Luke. The moral sense, though referred to throughout his writings, is more particularly sought out in the Expositions of the Psalms.