"It's all nonsense to say that the Fifteenth Century can't possibly speak to the Twentieth, because it is the Fifteenth and not the Twentieth, and because those two Centuries haven't got a Common Denominator. They have. It's Human Nature."

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The 'size' of science has doubled steadily every 15 years. In a century this means a factor of 100. For every single scientific paper or for every single scientist in 1670, there were 100 in 1770, 10,000 in 1870 and 1,000,000 in 1970.

— John Ziman