I love these guides – the graphical summaries make complex subject areas easier to consume. Small size books on big topics. This one is on Bertrand Russell, the mathematician and philosopher. I have many of his books so I can assure you it’s a good guide. I found it in Foyles in London a few years ago. Does anyone have more of these guides and if so which ones would you recommend? I have a few others on Logic, AI, and Jung but I wish I’d bought more!