Herman Melville said this quote
“ So true it is, and so terrible, too, that up to a certain point the thought or sight of misery enlists our best affections; but, in certain special cases, beyond that point it does not. they err who would assert that invariable this is owing to the inherent selfishness of the human heart. It rather proceeds from a certain hopelessness of remedying excessive and organic ill. To a sensitive being, pity is not seldom pain. An when at last it is perceived that such pity cannot lead to effectual succor, common sense bides the soul be rid of it. ”