8vo, typographic orange paper boards, 64pp. Fifth edition, with September 1959 date to copyright statement. Unclipped dust jacket (2.50) mildly toned to panels, small loss to spine crown and top edge of front panel, a few abrasions and rubbing to rear panel. Text is very faintly, minimally marked in light pen. Binding sharp and firm. The celebrated short essay on the sacrament of marriage (later subtitled ‘The Mystery of Faithful Love’) by the German Catholic philosopher and theologian. A handsome copy in mylar.