But there are positions which cannot be reached, though there be no physical or material objection in the way. It is the view which the mind takes of a thing which creates the sorry that arises from it. If the heart were always malleable and the feelings could be controlled, who would permit himself to be tormented by any of the reverses which affection meets? Death would create no sorry; ingratitude would lose its sting; and the betrayal of love would do no injury beyond that which it might entail upon worldly circumstances. But the heart is not malleable; nor will the feelings admit of such control.
–From Anthony Trollope, in The Small House at Allington