Philip Jose Farmer, RIP

Via many places, including John Scalzi’s blog.
Phillip Jose Farmer passed away last night at the age of 91.
I will fondly remember the Riverworld series, and even more so, the World of Tiers. I found the latter because Roger Zelazny cited them as a strong influence on the development of his Amber novels. They are fine novels in their own right.
If you haven’t read Riverworld or the World of Tiers novels yet,you now have an excuse to go out and do so.