Admitted to the Order in 1891, in 1907 he was assigned to the chair of moral theology at Louvain, succeeding, after an interval of seven years, his uncle, Fr. E. Génécot. He taught for 29 years, forming a good number of Jesuits and members of other congregations for the delicate office of confessor and spiritual director. From 1936 to 1942 he was superior at Malines; thereafter he devoted himself to various ministries.
A lively, clear and methodical teacher, he knew well how to distinguish the principal from the accessory, expressing himself in easy and concise forms and making use of practical principles rich in experience. He took charge of successive editions of his uncle’s Institutiones theologiae moralis, from the 6th to the 15th (Brussels 1908–42; he died while preparing the 16th), always revising the text, updating it and, even in typographical presentation, putting to good use his fine pedagogical qualities. He likewise updated the two volumes of Casus conscientiae from the 4th to the 7th ed. (ibid. 1932–38). He also published numerous works on moral subjects aimed at the widest possible readership: e.g., Rechtelijke Pflichtenleer. Deontologia iuridica (ibid. 1914, 3rd ed. 1937); Geneeskundige Pflichtenleer. Deontologia medica (ibid. 1919, 4th ed. 1935); Pflichtenboekje voor Ziekenverpleging (deontology for nurses, ibid. 1927, 5th ed. 1944); Over Pharmaceutische Zedelheer (deontology for pharmacists, ibid. 1932); De index en de kerkelijke Boekenwetten (ibid. 1921, 3rd ed. 1939); Biechtboeken (for confessors, ibid. 1933), etc., as well as numerous articles in various cultural periodicals.