Michalski was born on 12 April 1879 in
Dąbrówka Mała to Ignacy and Paulina Michalski (). He underwent elementary education at
Siemianowice Śląskie. In 1896, he joined the
Congregation of the Mission, attending a
minor seminary run by the Congregation in
Kraków until his graduation in 1900. He then studied theology and philosophy at the Congregation's Institute of Theology in Kraków, while also attending lectures about
Christology at
Jagiellonian University. Michalski was ordained a priest in 1903 at
Wawel Cathedral by Anatol Nowak. After his ordination, he served as a teacher of world literature and the
Polish language at a Congregation-run
gymnasium, while also lecturing on the history of philosophy and
paterology at the Institute of Theology. Between 1900 and 1906, Michalski studied Slavic studies at Jagiellonian University; afterwards, he served as a
catechist at a girls' gymnasium in Kraków between 1906 and 1908. From 1908 to 1911, he studied at
UCLouvain, from which he obtained a licentiate in 1910 and a doctorate in philosophy on 15 February 1911 due to his dissertation,
La réaction contre le psychologisme en Allemagne. Husserl, ses prédecésseurs et ses partisans. Upon returning to Poland, he taught philosophy at the Institute of Theology between 18 February 1911 and 31 August 1914. On 7 January 1914, he was appointed as a professor at Jagiellonian University; he served as an associate professor of Christian philosophy and apologetics from January 1914 to April 1919. On 26 November 1918, he received a
habilitation in Christian philosophy; given his habilitation, he was appointed as a professor of Christian philosophy at Jagiellonian University on 14 May 1919, teaching to first-year and second-year students. He was given
tenure on 24 August 1921. Michalski served as dean of the Faculty of Theology at Jagiellonian University for 4 terms between 1923 and 1937. On 10 June 1927, Michalski became a member of the
Polish Academy of Learning's section for history & philosophy, serving as its delegate to the
Union Académique Internationale between 1928 and 1947. Between 1931 and 1932, he served as rector of Jagiellonian University; during his term, he expanded the University's library. He was awarded the Commander's Cross of the
Order of Polonia Restituta in 1936 and made an
officier of the
Legion of Honour in 1937. He was arrested on 6 November 1939 alongside other professors at the
Collegium Novum and held at a prison near
Wrocław; he was transferred to
Sachsenhausen, from which he was released in February 1940. That same year, he became a member of the
Pontifical Academy of Saint Thomas Aquinas. Michalski resumed his duties as professor in March 1945. He died on 6 August 1947 in
Kraków, and was buried in
Rakowice Cemetery. ==Works==