- Karl Raimund Popper (1902-1994): Excellent Comprehensive article by Joseph Agassi | Highly Recommended!
- Popper, Karl Raimond by Ian C. Jarvie at Routledge Encyclopedia of Philosophy | Recommended!
- Story: Popper, Karl Raimond by Peter Munz | Recommended!
- Sir Karl Raimund Popper: In Memoriam by Eugene Yue-Ching Ho and Pui-Chong Lund |Recommended!
- Sir Karl Popper by Kelly L. Ross, Ph. D. at The Proceedings of the Friesian School, Fourth Series
- Remembering Karl Popper by Piers Norris Turner at Hoover Institute
- Karl Popper: Wikipedia entry
- Karl Popper at The Famous People
- Karl Popper: Stanford Encyclopedia of Philosophy. There are problems with this article.
- Not on-line but highly recommended is Karl Popper — The Formative Years, 1945: Politics and Philosophy in Interwar Vienna.
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"One of the main tasks for human reason is to make the universe we live in understandable to ourselves. This is the task of science. There are two different components of about equal importance in this enterprise. The first is poetic inventiveness ..."
– Karl Popper
books
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