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Dalam diri manusia (sebagai satu-satunya makhluk rasional di bumi) kemampuan-kemampuan alamiah yang diarahkan pada penggunaan nalarnya akan dikembangkan sepenuhnya hanya dalam ras, bukan pada individu. Asli: In man (as the only rational creature on earth) those natural capacities which are directed to the use of his reason are to be fully developed only in the race, not in the individual.