A community of interests and needs is the foundation of human friendship, while the opposition of needs and interests is not only capable of provoking antipathy, but it is notorious that nothing on earth has the same power of moving a man to violent and implacable hatred as a member of his own species.
Gustave de Molinari, The Society of To-morrow: A Forecast of Its Political and Economic Organisation (1899-1904), I.1.1.
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Gustave de Molinari
