“In social life we hardly stop to consider how much of that daring spirit which gives mastery comes from hardness of heart rather than from high purpose, or true courage. The man who succumbs to his wife, the mother who succumbs to her daughter, the master who succumbs to his servant, is as often brought to servility by a continual aversion to the giving of pain, by a softness which causes the fretfulness of others to be an agony to himself,—as by any actual fear which the firmness of the imperious one may have produced. There is an inner softness, a thinness of the mind's skin, an incapability of seeing or even thinking of the troubles of others with equanimity, which produces a feeling akin to fear; but which is compatible not only with courage, but with absolute firmness of purpose, when the demand for firmness arises so strongly as to assert itself.”