pomor said:
While I like Sapkowski, I don't think he is in the same league as Tolkien. Old JRR, among other things, created Fantasy as we know it today.
Well they are very different authors, even if they both write some kind of fantasy (in a way, isn't all fiction fantasy too?). Tolkien did not create "fantasy" as we know it today, but he helped shape what now is known as "canon" by RE-CREATING a variety of scenarios and folk tales from different parts of Europe that serve as the basis for the standard high-fantasy setting.
It would be naive to imagine that Tolkien was the first to come up with a story about a ring of power, a dark lord, a legendary broken sword or even multiple races coexisting in a fantastic world. Many of the Lord of the Rings key elements actually derive from Scandinavian (and German) mythology and the Arthurian myth. Are you familiar with the saga of the Volsungs? The Nibelungenlied? Richard Wagner, the famed composer, was obsessed with it and wrote 4 very long musical dramas together called "Der Ring des Nibelungen". His re-telling of the scandinavian myth with heavy german influences is centered around a hero, Siegfried (Sigurd -of the Volsung clan in the norse myth) who ignoring his heritage is raised by a blacksmith, Alberich, who once enslaved the race of the nibelung dwarves to mine the gold of the rhine for him and forge a ring of power. This ring, after a commotion in Valhalla, is kept by the giant Fafnir who changes into the form of a dragon/serpent and hides in a cave. Alberich has Siegfried reforge his father's sword (gifted by Odin in the norse myth) to kill Fafnir and retrieve the ring for him, a ring for which Fafnir killed his own brother. And so on and so forth.
Look people, nothing is new anymore. All the fantasy we love and enjoy has the same recurrent themes that humanity is obsessed with, especially indoeuropeans (since that is the literature we're discussing here). Some of these themes are power, fate and predestination. All indoeuropean mythologies deal with predestination one way or another, exploring the idea that only the strongest, if any, are able to change their fate. This is particularly well exemplified by the Greek Moriae and the Norse Norns. These beings know past, present and future, and what they dictate comes to happen... or does it?
Now, I would rescue from Sapkowski's The Witcher universe that it presents predestination from a more... human, perspective. It's not about being a hero and changing your fate, but about the duality of choice-and-consequence versus simply accepting your destiny.