Soren Aabye Kierkegaard (1813-1855) was a prolific 19th century Danish philosopher and theologian. Kierkegaard strongly criticized both the Hegelianism of his time, and what he saw as the empty formalities of the Danish church. Much of his work deals with religious themes such as faith in God, the institution of the Christian Church, Christian ethics and theology, and the emotions and feelings of individuals when faced with life choices. Scholars have interpreted Kierkegaard variously as an existentialist, neo-orthodoxist, postmodernist, humanist, and as an individualist. Crossing the boundaries of philosophy, theology, psychology, and literature, he is an influential figure in contemporary thought. His works include: The Concept of Irony (1841), Either/Or (1843), Fear and Trembling (1843), Repetition (1843), Philosophical Fragments (1844), The Concept of Dread (1844), Stages on Life's Way (1845), Concluding Unscientific Postscript to the Philosophical Fragments (1846), Works of Love (1847), Christian Discourses (1848), The Sickness Unto Death (1849) and Practice in Christianity (1850).
