I began by asking whether Wittgenstein was a spiritual genius. That question really has two parts: was he the spiritually sublime individual – the ‘saint’ – people often said he was? And did he know how to be such an individual, whether or not he was one himself? I think the answer must be no to both questions. His vanity, emotional solipsism and coldness put him well outside the category of the saint; and his engineering (or surgical) approach to his spiritual condition seems to me wrongly conceived, embodying as it does a deep mistake of ethical attention. But a better question might be this: given his nature, did he live a noble and ethically distinguished life? (He clearly lived an impressive and remarkable one.) Here I think we must do him the courtesy of taking him at his word and not allow our natural sentimentality about great men to get in the way of hearing what he actually says about himself. Of Moore's reputation for saintly childlike innocence, Wittgenstein remarked: ‘I can’t understand that, unless it’s also to a child’s credit. For you aren’t talking of the innocence a man has fought for, but of an innocence which comes from a natural absence of temptation.’ If we take seriously Wittgenstein's own repeated assessment of himself as ‘rotten’ and ‘indecent’, as having a ‘wicked heart’ – in whatever way these epithets were meant – then it becomes clear why he regarded his life as a mighty struggle with himself, and what he had to overcome to achieve the moral standing he did. His peculiar greatness comes from that agonising battle between his natural hubris and the humility he craved, between his compulsive devotion to himself and his willed concern for others. The singularity of his spiritual achievement consists in this strained amalgamation of aggressive megalomania and abject self-mortification. Somehow this battle brought something spiritually valuable into the world that had not been there before: an ability, we might say, to attend religiously to the face of another human being – but to do so as if this were the strangest and most impossible thing in the world to achieve.