And yet it is surely human to forget, even to want to forget. The Ancients saw it as a divine gift. Indeed if memory helps us to survive, forgetting allows us to go on living. How could we go on with our daily lives, if we remained constantly aware of the dangers and ghosts surrounding us? The Talmud tells us that without the ability to forget, man would soon cease to learn. Without the ability to forget, man would live in a permanent, paralyzing fear of death. Only God and God alone can and must remember everything. In the above excerpt Wiesel is using what rhetorical devices?