My favourite author as well! I've read all of his fiction, but very little of his non-fiction. I love the "extended" Foundation series (including the Empire and

My favourite author as well! I've read all of his fiction, but very little of his non-fiction. I love the "extended" Foundation series (including the Empire and Robots sub-series) but my favourite book is The End of Eternity (arguably the first one in the extended series).