Amazon.com Product Description (ISBN 0415278449, Paperback)

When first published in 1959, this book revolutionized contemporary thinking about science and knowledge. It remains the one of the most widely read books about science to come out of the twentieth century.

Amazon.com Book Description (ISBN 041507892X, Paperback)

"One of the most important documents of the twentieth century."
--Sir Peter Medewar, New Scientist
"One cannot help feeling that, if it had been originally translated as soon as it had been published, philosophy in this country might have been saved some detours. Professor Popper's thesis has that quality of greatness that, once see, it appears simple and almost obvious."
--Times Literary Supplement