This section is from the book "The Newer Knowledge Of Nutrition", by Elmer Verner McCollum. Also available from Amazon: The Newer Knowledge of Nutrition: The Use of Food for the Preservation of Vitality and Health.
Many thinking people are now calling attention to the imperative need of strengthening the social fabric. Huntington (1) points out that this can be accomplished only by improvement in the inherited factors, in the health and the training of our children. He emphasizes that good inheritance or good training can serve the individual only when health permits. It will be accepted by all that heredity and training form the most important levers of accomplishment, and that they can act effectively only from the fulcrum of health. The man or woman who is always tired, or who feels no joy in actively prosecuting the work in which he or she is engaged, who is easily disheartened and downcast because of personal prospects, who struggles on more from a sense of dread of becoming a dependent upon others than from confidence that victory will still come as a reward, is essentially the victim of poor health.
 
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