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We begin to see, therefore, the importance of selecting our environment with the greatest of care, because environment is the mental feeding ground out of which the food that goes into our minds is extracted.

Napoleon Hill (2008). “The Law of Success: The Master Wealth-Builder's Complete and Original Lesson Plan forAchieving Your Dreams”, p.467, Penguin
We begin to see, therefore, the importance of selecting our environment with the greatest of care, because environment is the mental feeding ground out of which the food that goes into our minds is extracted.