Peter Abelard was a medieval French philosopher, theologian, and scholar who significantly shaped Christian thought and education.
Søren Kierkegaard was a Danish philosopher and theologian who profoundly influenced existentialism and modern psychology.
John Hick was a British philosopher and theologian known for his significant contributions to religious pluralism and comparative theology.
Paul Tillich was a German-American Protestant theologian and philosopher known for his existentialist approach to Christianity and his influential works in 20th-century theology.
Lev Shestov was a Russian existential philosopher, known for his exploration of nihilism and critique of rationalism in his works.