Karl Popper on human knowledge

I heard Karl Popper give a lecture at York while I was an undergraduate there. I think it was the inaugural lecture of a series sponsored by some variety of Rowntree money and I remember that Jo Grimond was present.

Here is Popper speaking some years after that. He took part in three programmes under the title Uncertain Truth - you can find the others on Youtube if you search - but this one on knowledge gets to the heart of his philosophy. You can watch part 2 of it too.

If you want to know more about Popper and his philosophy - he has some claim to be the most important liberal thinker of the 20th century - then I recommend the short introduction by Bryan Magee.