# HoP 231 - Origin of Species - Roger Bacon

An episode of [History of Philosophy Without Any Gaps](https://invisiblenetwork.ai/podcast/396903391), 5 Jul 2015, 23 min.

Audio: https://mcdn.podbean.com/mf/web/h4cbaz/HoP231-OriginofSpecies-RogerBacon.mp3

Roger Bacon extols the power of science based on experience and uses a general theory of "species" to explain light and vision.

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