aberration of mind

See: insanity
References in classic literature ?
A tremulous uncertainty of the action of all her limbs soon became a part of her regular state, and afterwards, at intervals of two or three months, she would often put her hands to her head, and would then remain for about a week at a time in some gloomy aberration of mind.
When I observed this last, plain evidence of my friend's aberration of mind, I could scarcely refrain from tears.