“In the later part of his creative life Nietzsche suffered acutely from loneliness. Like his alter ego, Zarathustra, he found himself alone on a (Swiss) mountain top. But, intellectually at least, he accepted this condition. Since, he reasoned, a radical social critic, a 'free spirit' such as himself, sets himself ever more in opposition to the foundational agreements on which social life depends, he reduces the pool of possible comrades, and so of possible friends, to vanishing point.”

“But Philip was impatient with himself; he called to mind his idea of the pattern of life: the unhappiness he had suffered was no more than part of a decoration which was elaborate and beautiful; he told himself strenuously that he must accept with gaiety everything, dreariness and excitement, pleasure and pain, because it added to the richness of the design.”

“The vanity extended most of all to his library, arguably the real love of Cicero's life. It is difficult to name anything in which he took more pleasure, aside possibly evasion of the sumptuary laws. Cicero liked to believe himself wealthy. He prided himself on his books. He needed no further reason to dislike Cleopatra: intelligent women who had better libraries than he did offended him on three counts.”

“In this passionately social world, loneliness dogged the spirit. People were constantly “getting together,” but they never really got there. Everyone was terrified of being alone with himself; yet in company, in spite of the universal assumption of comradeship, these strange beings remained as remote from one another as the stars. For everyone searched his neighbour’s eyes for the image of himself, and never saw anything else. Or if he did, he was outraged and terrified.”

“A man only begins to be a man when he ceases to whine and revile, and commences to search for the hidden justice which regulates his life. And he adapts his mind to that regulating factor, he ceases to accuse others as the cause of his condition, and builds himself up in strong and noble thoughts; ceases to kick against circumstances, but begins to use them as aids to his more rapid progress, and as a means of the hidden powers and possibilities within himself.”

“At a certain point in his life he stopped searching for himself in everything that exists and gave in to temptations. Or, as you say, he sinned and later fled.”