According to Volodymyr Vinnychenko's play Natus.

The young scientist Roman Vitaliyev is engaged in scientific activity, seeking to become a professor. Complex relationships with his wife, Christia Parmenivna, who constantly demand money, blackmail and manipulate a man because of the love for their six-year-old son Natus, are hindered. The novel is genuinely in love with actress Olga. It reciprocates with him and ... But most of all, his father's instinct is strongest.