Abstract

Fr. Paweł Siwek, SJ may be considered the only Polish Jesuit philosopher of the 20th century to have achieved worldwide recognition. This article surveys his work from a broad perspective reflecting philosophy, psychology and theology as pursued in Catholic circles in the 19th and 20th centuries. We review his achievements, while also offering an interpretation. We put forward the thesis that he found his own way of practising neo-Thomism in the spirit of Pope Leo XIII’s Aeterni Patris. To substantiate our claims, we first briefly sketch his biography, providing a synthetic overview of the relevant contexts for his philosophical oeuvre. We then identify his four main areas of interest: namely, the history of philosophy, systematic philosophy, the scientific psychology of religion and spirituality, and Christian apologetics in the face of world religions and spiritual movements. In our conclusion, we discuss the main traits of his intellectual work, along with its impact.