Aleksandr Solzhenitsyn said this quote

If it were possible for any nation to fathom another people's bitter experience through a book, how much easier its future fate would become and how many calamities and mistakes it could avoid. But it is very difficult. There always is this fallacious belief: 'It would not be the same here; here such things are impossible.'Alas, all the evil of the twentieth century is possible everywhere on earth.