It seems to me that there have been three fundamental directions in my research, certainly modest, [...], to which I have sought to remain faithful for nearly half a century:

1. The investigation of the metaphysical notion of participation;

2. The determination of the metaphysical essence of the modern principle of immanence as "radical atheism"; and

3. The recovery of classical Christian realism in Søren Kierkegaard's metaphysical existentialism against the atheistic anthropology of modern immanence.