Sebastian Kappen S.J. (1924-1993) was a renowned philosopher, author and liberation theologian from India. Kappen did his doctoral studies from the Gregorian University, Rome, with a thesis on "Praxis and Religious Alienation according to the Economic and Philosophical Manuscripts of Karl Marx". His subsequent studies have been geared to the requirements of transformative social action in India. This led him to an investigation into the liberative and humanizing potential of the original teachings of the historical Jesus as well as of Indian religious traditions, particularly the tradition of dissent represented by Buddha and the medieval Bhakti movement. Kappen was engaged in a study of communalism and the post-modernism debate, when mother earth called him back on the 30th of November 1993. The second volume of the Collected Works of Kappen contains his book Marxian Atheism and related essays.