"Certain mystes aver that the real world has been constructed by the human mind, since our ways are governed by the artificial categories into which we place essentially undifferentiated things, things weaker than our words for them. We believe we invent symbols. The truth is that they invent us; we are their creatures, shaped by their hard, defining edges."

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Innumerable entirely new compounds have been produced in the last century. The artificial dye-stuffs, prepared from materials occurring in coal-tar, make the natural colours blush. Saccharin, which is hundreds of times sweeter than sugar, is a purely artificial substance. New explosives, drugs, alloys, photographic substances, essences, scents, solvents, and detergents are being poured out in a continuous stream.

— Frederick Soddy