This a clear and concise introduction to Danish philosopher Soren Kierkegaard. Michael Watts uses Kierkegaard's own writings to introduce his theories about living a truthfu; and spiritual life, while explaining the enormous influence of the philosopher's personal life on his work and beliefs. As the founder of 20th century existentialism, and the first philosopher to define the idea of angst, Kierkegaard's profound influence on modern life is clearly defined in accessible terms in this guide for students and general readers.