Lensmen Series

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The Lensman series is a serial science fiction Space Opera by Edward Elmer “Doc” Smith. Set two billion years before the present time, the universe has few life-forms aside from the ancient Arisians, and few planets besides their native world. The peaceful Arisians have foregone physical skills in order to develop contemplative mental power. The underlying assumption for this series, based on theories of stellar evolution extant at the time of the books’ writing, is that planets form only rarely. (source: Wikipedia)

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