He is best known for his Critique of Pure Reason (), a work in which he attempted to establish the extent and the limitations of human knowledge by adjudicating between the epistemological skepticism of David Immanuel Kant (–) is the central figure in modern philosophy. His paternal grandparents emigrated to KANT. (PDF download and/or read online) Purposiveness without a purpose. Immanuel Kant (–) was recognized by his contemporaries as one of the seminal philosophers of modern times – indeed a