Religion and Love

I have found Religion and Love the most frequent among the exciting causes of madness: both may produce this dreadful effect by an intense and exclusive direction of the mind to one subject, by the action of opposing passions, such as hope and fear, or by rendering the sensibility morbidly acute; thus individuals, whose judgment is not proportionate to their feelings, are peculiarly liable to become insane from these sources.

C***
Practical Observations on Insanity, p. 32.