German Quotes and aphorisms about demands Carl von Clausewitz Werner Heisenberg ,, Although the theory of relativity makes the greatest of demands on the ability for abstract thought... Wolfgang Ketterle Albert Einstein Albert Einstein Martin Heidegger Georg Simmel Till Lindemann Rudolf Christoph Eucken Peer Steinbruck ,, There's no more place in the euro zone for well-meaning laxness when dealing with deficits and fail...