Soren Kierkegaard is known as the father of existentialism and his philosophy has influenced Western thought and writing for centuries. Some of the synonyms for Soren Kierkegaard include Danish philosopher, theologian, existentialist, thinker, and writer. Kierkegaard's ideas were often focused on the individual and their place in society, and he encouraged people to question their beliefs and the world around them. His works, such as Fear and Trembling, The Sickness Unto Death, and Either/Or, explored topics such as ethics, religion, and existentialism. Overall, Soren Kierkegaard remains a prominent figure in philosophy and his ideas continue to inspire and challenge individuals throughout the world.