Philosophy has always been and is today the revolution of thought. This is rooted in the great love for the present, the gratitude for living, today and at no other time, where the human being is given. The present is the simple and incomprehensible, as expressed in the medieval verse: I come, I do not know from where, I am, I do not know who, I die, I do not know when, I go, I do not know where, I wonder that I am happy. Karl Jaspers' last eight lectures, delivered in 1961, are regarded as the legacy of this great philosopher of the 20th century. Their fundamental idea: All science encounters an insurmountable limit: The world as a whole can never be the object of our knowledge. Therefore, we can never fully plan to possess it. This also applies to ourselves: We are.