Chapter III: Sleep And Death
This does not mean however that because it answers to an inner experience of the soul the question can only be settled by each man for himself and therefore cannot be the subject-matter of a valid spiritual science. True, everyone must have the experience himself, just as everyone has to perceive for himself the proof of a theorem in mathematics. But the pathway by which the experience is reached, no less than the method of proving the mathematical theorem, is universally valid.
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ENRSP1969