“The Golden Mean was considered a fundamental constant by the Egyptians and the fundamental division of the whole into two parts.” Golden RatioGolden MeanHistory Of MathematicsConstants Of NatureFundamental ConstantsGolden Proportion Book:Sacred Number and the Origins of Civilization: The Unfolding of History Through the Mystery of Number Source: Sacred Number and the Origins of Civilization: The Unfolding of History Through the Mystery of Number