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Letter "S" » Spiritual evolution
«Love is a sacred reserve of energy; it is like the blood of spiritual evolution»
«Evolution seems to close the heart to some of the plainest spiritual truths while it opens the mind to the wildest guesses advanced in the name of science.»
«The further the spiritual evolution of mankind advances, the more certain it seems to me that the path to genuine religiosity does not lie through the fear of life, and the fear of death, and blind faith, but through striving after rational knowledge.»

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