Quote by Bertrand Russell
Is there any knowledge in the world which is so certain that no reasonable man could doubt it?
Summary
This quote questions the existence of any knowledge that is absolutely certain and beyond reasonable doubt. It implies that, despite various forms of knowledge present in the world, there might not be any that is universally undeniable. In other words, the quote suggests that there may always be room for doubt and differing interpretations even in the most apparently secure realms of knowledge.