Søren Aabye Kierkegaar (pronounced [ˈsœːɐn ˈkʰiɐ̯kəˌɡ̊ɒˀ], but usually Anglicized as [ˈkɪəkəgɑːd, ˈkɪɚkəgɑɹd]; Listen (help·info)) (5 May 1813 – 11 November 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. His early work was written under various pseudonyms who present their own distinctive viewpoints in a complex dialogue. Kierkegaard left the task of discovering the meaning of the works to the reader, because "the task must be made difficult, for only the difficult inspires the noble-hearted". Subsequently, many have interpreted Kierkegaard as an existentialist, neo-orthodoxist, postmodernist, humanist, individualist, etc. Crossing the boundaries of philosophy, theology, psychology, and literature, Kierkegaard came to be regarded as a highly significant and influential figure in contemporary thought.