The concept of matter in ancient atomists and in modern physics: (a report at the scientific meeting of the Theological Scientific Society, delivered in Lviv on November 30, 1932): Lviv, Theological scientific society, 1932, 7 p.

Material is a scancopy of Havryiil Kostelnyk’s article from journal Bohosliv`ya (Theology, vol. X, 1932, book 4). Material highlights, that atomistic concept of matter has to be replaced by a new concept of energy, which, according to the author, has its origin in Newtonian physics. In conclusion, the author notes, that the introduction of a new concept could become the basis for a rapprochement between physics and religion, for example in solving the problem of the connection between the soul and the body.