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Quotations by John Napier

Seeing there is nothing that is so troublesome to mathematical practice, nor that doth more molest and hinder calculators, than the multiplications, divisions, square and cubical extractions of great numbers … I began therefore to consider in my mind by what certain and ready art I might remove those hindrances.

John Napier Wikipedia: John Napier  

Mirifici logarithmorum canonis descriptio, 1614, [The work that introduced logarithms]