Pascal Mercier said this quote

Gregorius was never to forget this scene. They were his first Portuguese words in the real world and they worked. That words could cause something in the world, make someone move or stop, laugh or cry: even as a child he had found it enigmatic and it had never stopped impressing him. How did words do that? Wasn't it like magic?But at this moment, the mystery seemed greater than usual, for these were words he hadn't even known yesterday morning.