Ideas of Roger Bacon, by Theme

[English, 1214 - 1292, Born in Ilchester. Said to have invented gunpowder. Franciscan, based at Oxford University.]

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26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / d. Knowing essences

16745

No one even knows the nature and properties of a fly - why it has that colour, or so many feet