Anne Frank said this quote

I don't believe that the big men, the politicians and the capitalists alone, are guilty of the war. Oh no, the little man is just as guilty, otherwise the peoples of the world would have risen in revolt long ago! There's in people simply an urge to destroy, an urge to kill, to murder and rage, and until all mankind, without exception, undergoes a great change, great wars will be waged, everything that has been built up, cultivated, and grown will be destroyed and disfigured, after which mankind will have to begin all over again.