Abstract

With his philosophy of transcendence, Karl Jaspers is considered one of the few great metaphysicians of the 20th century. This study is devoted to the roots of his transcendental thinking in the philosophy of Plotinus (c. 204–270). It demonstrates the constitutive role that reference to the philosophia perennis played for Jaspers, as well as his early and intensive engagement with the founder of Neoplatonism, who for Jaspers was ‘the metaphysician par excellence’. His connection with Plotinus opens up fascinating new perspectives on Jaspers’ concept of existential self-emergence as an ascent to the One, and on his henological philosophy of reason and his speculative paradoxical thinking about God.