He went to fetch a book from a shelf of his library.
"It's a thousand chances that I shall find something to confirm my diagnosis in the lectures of Professor Ball on mental diseases."
He turned over the leaves of the book.
"Just see, my dear Romilly, this is what I find to begin with; in the eighteenth lecture, page 389: 'Many madmen are to be met with among actors.' This remark of Professor Ball's reminds me that the celebrated Cabanis one day asked Dr. Esprit Blanche whether the stage was not a cause of madness."
"Really?" asked Romilly uneasily.
"Not a doubt of it," replied Trublet. "But listen to what Professor Ball says on the same page. 'It is an incontestable fact that medical men are excessively predisposed to mental aberration.' Nothing is truer. Among medical men, those who are more especially predestined to insanity are the alienists. It is often difficult to determine which of the two is the crazier, the madman or his doctor. People say too that men of genius are prone to insanity. That is certainly the case. Still, a man is not a reasoning being merely because he is an idiot."
After glancing a little further through the pages of Professor Ball's lectures, he resumed his writing:
"Ordinary indications of maniacal excitement, and, if it be taken into consideration that the subject was of a neuropathic temperament, there is reason to believe that his constitution predisposed him to insanity, which, according to the highest authorities, is merely an exaggeration of the habitual temperament of the individual, and hence it is not possible to credit him with full moral responsibility."
He signed the sheet and handed it to Pradel, saying: