Every substance in nature and every work of man must be judged in relation to his own use, his own safety… — Jean Jacques Rousseau

Every substance in nature and every work of man must be judged in relation to his own use, his own safety, his own preservation, his own comfort. Thus he should value iron far more than gold, and glass than diamonds; in the same way he has far more respect for a shoemaker or a mason than for a Lempereur, a Le Blanc, or all the jewellers in Europe. In his eyes a confectioner is a really great man, and he would give the whole academy of sciences for the smallest pastrycook in Lombard Street. Goldsmiths, engravers, gilders, and embroiderers, he considers lazy people, who play at quite useless games. He does not even think much of a clockmaker.

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