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Roger Bacon

b: Ilchester, England, 0, 1214

d: Oxford, England., 0, 1292

English. Philosopher. Scientist. Wrote on optics, nature of concave and convex lenses; credited with discovery of gunpowder; greatest work Opus Majus, 1265.


  • For the things of this world cannot be made known without a knowledge of mathematics.

  • It is the perennial youthfulness of mathematics itself which marks it off with a disconcerting immortality from the other sciences.

  • Mathematics is the door and the key to the sciences.

  • Reasoning draws a conclusion, but does not make the conclusion certain, unless the mind discovers it by the path of experience.

  • The strongest arguments prove nothing so long as the conclusions are not verified by experience. Experimental science is the queen of sciences and the goal of all speculation.

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