A few months ago Chris Williams, an OU history lecturer and political activist whom I've known for years online, asked me to give this year's Darwin Memorial Lecture to the Leicester Secular Society. I suggested the topic because, a couple of years earlier, I'd put together a stash of notes and links for a blog post that I'd never quite got around to writing.
The event, at the Society's splendid Victorian red-brick Secular Hall on 13 February 2011, drew a large and lively audience, from that cross-section of radical England that you so often find in its socialist, secularist and peace movements. Their searching and informed questions often had me thinking fast on my feet.
Here's the gist of what I said - a longer version will no doubt appear on my own blog.