Irvin Yalom. When Nietzsche wept (№ 388394)

But but but - here again, thought Breuer, appears this "demon But." He wanted to kick himself as follows on the head. All his life he held this indecisive "but"-the position and now he behaves the same way with Freud, and Nietzsche - and all this despite the fact that deep down, he could assume that both are right.