The Crisis of European Sciences and Transcendental Phenomenology: An Introduction to Phenomenological Philosophy (German: Die Krisis der europäischen Wissenschaften und die transzendentale Phänomenologie: Eine Einleitung in die phänomenologische Philosophie) is an unfinished 1936 book by the German philosopher Edmund Husserl. The work was influential and is considered the culmination of Husserl's thought, though it has been seen as a departure from Husserl's earlier work. It has been compared to the philosopher Georg Wilhelm Friedrich Hegel's The Phenomenology of Spirit (1807).