A Quote by William Whewell on purpose and weapons
Nobody since Newton has been able to use geometrical methods to the same extent for the like purposes; and as we read the Principia we feel as when we are in an ancient armoury where the weapons are of gigantic size; and as we look at them we marvel what manner of man he was who could use as a weapon what we can scarcely lift as a burden.
Source: E. N. Da C. Andrade "Isaac Newton" in J. R. Newman (ed.) The World of Mathematics, New York: Simon and Schuster, 1956.
Contributed by: Zaady