His own account was this: "In my quality of solitary, I am more sensitive than another; if I am wrong with a friend who lives in the world, he thinks of it for a moment, and then a thousand distractions make him forget it for the rest of the day; but there is nothing to distract me as to his wrong towards me; deprived of my sleep, I busy myself with him all night long; solitary in my walks, I busy myself with him from sunrise until sunset; my heart has not an instant's relief, and the harshness of a friend gives me in one day years of anguish. In my quality of invalid, I have a title to the considerateness that humanity owes to the weakness or irritation of a man in agony. Who is the friend, who is the good man, that ought not to dread to add affliction to an unfortunate wretch tormented with a painful and incurable malady?"[289] We need not accept this as an adequate extenuation of perversities, but it explains them without recourse to the theory of uncontrollable insanity. Insanity came later, the product of intellectual excitation, public persecution, and moral reaction after prolonged tension. Meanwhile he may well be judged by the standards of the sane; knowing his temperament, his previous history, his circumstances, we have no difficulty in accounting for his conduct. Least of all is there any need for laying all the blame upon his friends. There are writers whom enthusiasm for the principles of Jean Jacques has driven into fanatical denigration of every one whom he called his enemy, that is to say, nearly every one whom he ever knew.[290] Diderot said well, "Too many honest people would be wrong, if Jean Jacques were right."