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The strength, happiness, prosperity and stability of nations and races almost entirely depend on their hereditary heritages and their ability successfully to adapt themselves to their environment.
The whole history of man's development from the earliest times conclusively proves that his highest welfare is conditioned on the harmonious development of all his powers, physical, intellectual and moral, and that when one or more of these have been slighted or neglected, he has paid a dear penalty for such neglect.
Glancing down through the ages, we behold untold misery and innumerable wrecks caused by the violation of this inexorable law of nature. Here we see ignorance or disregard of sanitary laws followed by pestilence, disease, lowered vitality, degeneration and extinction; there we behold licentiousness, debauchery and immorality in all its varied forms, produce a similar result. Nor are the most striking examples taken from savage or barbarous peoples, but furnished by
STUVER E. THE INFLUENCE OF OUR SCHOOL SYSTEM ON THE HEALTH AND DEVELOPMENT OF THE CHILD.. JAMA. 1897;XXIX(25):1247-1252. doi:10.1001/jama.1897.02440510009001d