MARÉCHAL, Joseph; BAŃKA, Aleksander R.; SURZYN, Jacek. On natural desire of perfection that makes happy. Folia Philosophica, [S. l.], v. 29, p. 13–26, 2011. DOI: 10.31261/fp.21380. Disponível em: https://journals.us.edu.pl/index.php/FOLIA/article/view/21380. Acesso em: 5 dec. 2025.