"Normality" is a myth; we're all a little neurotic, and the study of neurosis has been able to classify the general types of disturbance which are most common. And some types (providing the subject is not suffering so extreme a case as to have crossed the border into psychosis) can be not only useful, but perhaps necessary for certain kinds of work....
The man is rare who will give his life for what is merely the lesser of two evils. Merrick's decision was even tougher: to save human beings at the expense of humanity, or vice versa?
Every era in history has had its Pop Ganlon's. Along in years and not successful and not caring much anyway. A matter of living out their years, following an obscure path to oblivion. It was that way in ancient Egypt, just as it will be when the Solar System shrinks to our size. And once in a while such men are given an opportunity to contribute to the society that has forgotten them....