“When reason has followed its road to the end, the point of crisis is reached and man is brought to the great question mark over his own existence.”

“Can Christian preaching expect modern man to accept the mythical view of the world as true? To do so would be both senseless and impossible. It would be senseless, because there is nothing specifically Christian in the mythical view of the world as such. It is simply the cosmology of a pre-scientific age.”

“The historical method includes the presupposition that history is a unity in the sense of a closed continuum of effects in which individual events are connected by the succession of cause and effect....This closedness means that the continuum of historical happenings cannot be rent by the interference of supernatural transcendent powers and that therefore there is no "miracle" in this sense of the word.”

“When reason has followed its road to the end, the point of crisis is reached and man is brought to the great question mark over his own existence.”