"At a moderate calculation, among a million of persons inhabiting the metropolis, there are, at least, twenty-five thousand children who attend these schools, and cost their parents as many pounds sterling, per annum."

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Even the simplest calculation in the purest mathematics can have terrible consequences. Without the invention of the infinitesimal calculus most of our technology would have been impossible. Should we say therefore that calculus is bad?

— Stanislaw Ulam