کتاب چرا جنگ؟- اثر: زیگموند فروید-آلبرت آینشتاین - بهترین کتاب ها و نمایشنامه های فلسفی

Albert Einstein and Sigmund Freuds correspondence about peace and war was published in a pamphlet called "Why War?" The pamphlet appeared just after Hitler had risen to power, in German, and had a tiny circulation unfortunately.