The late, great and sadly missed Carl Sagan is being mentioned a bit on Radio 4 just now, trailing a radio show where another excellent science broadcaster, Professor Brian Cox, will talk about the influence of Sagan on his young life. The perfect excuse to post this. As a scientist, humanist and aetheist, I find his perspective on our importance quite reassuring! I hope you enjoy this as much as I do. Even if you don't agree with the (literally) world view, you can still enjoy it as a performance. Sagan was a superb presenter of big ideas about our universe and his views on our place in it, delivered in a highly accessible way.