"It is always difficult to decide on how to respond to people whose ethos is so alien and, in fact, repellent to one’s own. It is not that I take exception to the general points made by you but that every ounce of my energy has been devoted to an active opposition to cruel bigotry, compulsive violence, and the sadistic persecution which has characterised the philosophy and practice of fascism.

I feel obliged to say that the emotional universes we inhabit are so distinct, and in deepest ways opposed, that nothing fruitful or sincere could ever emerge from association between us."

Bertrand Russell, from his response to an invitation by British fascist Oswald Mosley to publicly debate the merits of fascism.