We all know that books burn-yet we have the greater knowledge that books can not be killed by fire. People die, but books never die. No man and no force can abolish memory. No man and no force can put thought in a concentration camp forever. No man and no force can take from the world the books that embody man's eternal fight against tyranny of every kind. In this war, we know, books are weapons. And it is a part of your dedication always to make them weapons for man's freedom.