"I found the Nazis utterly revolting – cruel, bigoted, and stupid. Morally and intellectually they were alike odious to me. Although I clung to my pacifist convictions, I did so with increasing difficulty. When, in 1940, England was threatened with invasion, I realised that, throughout the First War, I had never seriously envisaged the possibility of utter defeat. I found this possibility unbearable, and at last consciously and definitely decided that I must support what was necessary for victory in the Second War, however difficult victory might be to achieve, and however painful in its consequences."
January 1, 1970
https://en.wikiquote.org/wiki/The_Autobiography_of_Bertrand_Russell