Until you understand what a sword is, and what purpose it serves in a witcher's hand, you will not pick one up. You are not learning in order to kill and be killed. You are not learning to kill out of fear and hatred, but in order to save lives. Your own and those of others.
A sword is a long, edged piece of metal, used as a cutting, thrusting, and clubbing weapon in many civilizations throughout the world. It is also the most prominent type of weapon in the Witcher saga. Geralt carries two swords: a steel sword and a silver sword. Also, many characters in the novels have their own, named swords: