Dinah Maria Mulock Craik,
A Life for a Life, Volume 1 (of 3…
“ I call moral insanity that kind of disease which is super-induced on comparatively healthy minds by dwelling incessantly on one idea; the sort of disease which you find in women who have fallen into melancholy from love-disappointments; or in men for overweening ambition, hatred, or egotism—which latter, carried to a high pitch, invariably becomes a kind of insanity. ”
