It isn't, that Sapkowski always shows us absolute moral clarity, but he does conviction.
At first glance, it may appear difficult to define a moral conduct. But simply acting out on principle, seems generally like a good first step, because after all, at least in accordance with the tales, that is what makes us human. In essence defining, who we actually are as such, or for that matter, are not, or do not strive to be.
Reading The Witcher strikes as an inherently moral tale, in the sense that the choices one may even struggle with are in the end clear to make out. What The Witcher teaches us, instead, I argue, is what are the fundamental principles that ultimately comprise moral clarity for a person, regarding their cause, or purpose in life.
Here, I attempt to outline them, in as clear and universal a manner, as I can possibly manage:
Firstly, as the story of Sapkowski's Witcher takes shape, and this does take a bit to become apparent from the short stories, but there emerges in the books enough of a sense off an immediate urgency to Geralt's overarching cause of finding Ciri, that is prompting him for undertaking the journey outward, i.e. do something and act. If we think about it, this sense appears to in essence be the very first step for any worthwhile endeavour as such.
Then, on a journey undertaken, and Geralt, unlike in many other stories, never at the core weavers from this, there's to be the absolute belief, that what one is doing is the correct, sought after, as in, a desired choice. That gives the motivating, imperative drive to the protagonist for outfitting onto the adventure, even after knowing that a sense of responsibility calls that they should do it, it is more this sense, which urges them to implement.
Somewhat growing from that sense of conviction for the credibility of their mission, that people are counting on them, it of course flows naturally then, that one has to have a strong will towards the cause, that means that it is a matter of strong determination for them, which overarches