But when this extensive, brilliant technical knowledge and ability thus meant "death", what then was the meaning of "life"? Indeed, here life became a single, great question that unveiled for us the one absolute fact: that we now knew that we knew nothing. And we have thus come to the absolute highest knowledge that can be understood or acquired on the purely physical side of the "gate of heaven". Indeed, this knowledge is nothing less than the very "key" to this "gate", and thereby to the sparkling and shining "real human kingdom" behind it.