I think all of the ideas presented above are excellent and true. For me, though, this book reminds me of the power of the written word. If Anne Frank had not kept a diary, we would still know about the events of the Holocaust and we would still know that certain Jewish families were hidden by kind-hearted, humane, and sacrificial people. What we wouldn't necessarily know is how it felt to be in those circumstances. What we wouldn't understand is that, despite the unusual life Anne led, she was not so different from any other teenager. What we wouldn't know is that, as a previous poster suggested, it was possible to maintain an optimistic outlook on the basic goodness of man--even in the midst of such an inhumane atrocity. The written word has power, and that's why The Diary of Anne Frank is important.