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Nowhere can man find a quieter or more untroubled retreat than in his own soul.

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Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life.

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The things you think about determine the quality of your mind.

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Things of themselves cannot touch the soul at all. They have no entry to the soul, and cannot turn or move it. The soul alone turns and moves itself, ...more

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Your mind will take on the character of your most frequent thoughts: souls are dyed by thoughts.