I have downloaded the audio and clipped out the key passage and uploaded to YouTube - it is only two minutes long. (I am sure the BBC won't mind.)
I googled around to find more information on the Conversation Society that is mentioned. It was called the Junto Club. More information here on the Benjamin Franklin History website and here on Wikipedia
So Benjamin Franklin was convening a Book Discussion Café (well not really but it's a nice fantasy) back in 1727 that morphed into the Library Company of Philadelphia - the first public library in the US in 1731.
I love the thought that they bought books to inspire their conversations and that this book collection was the foundation of the public library.
An absolutely amazing story!
Why not start your own Junto Club. It has some very KM like features. All you need to do is update Benjamin Franklin's 24 questions into modern day English and a business environment - and you have it!