The moral and intellectual condition of a nation may certainly prove of decisive importance on its own account, but all due attention must also be pa… - Heinz Guderian

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The moral and intellectual condition of a nation may certainly prove of decisive importance on its own account, but all due attention must also be paid to material considerations. When a nation has to reckon with a struggle against superior forces on several fronts, it must neglect nothing that may conduce to the betterment of its situation.