The strong man holds in a living blend strongly marked opposites. The idealists are usually not realistic, and the realists are not usually idealistic. The militant are not generally known to be passive, nor the passive to be militant. Seldom are the humble self-assertive, or the self-assertive humble. But life at its best is a creative synthesis of opposites in fruitful harmony. The philosopher Hegel said that truth is found neither in the thesis nor the antithesis, but in the emergent synthesis which reconciles the two.
***The tough mind is sharp and penetrating, breaking through the crust of legends and myths and sifting the true from the false. The tough-minded individual is astute and discerning. He has a strong austere quality that makes for firmness of purpose and solidness of commitment. Who doubts that this toughness is one of man’s greatest needs? Rarely do we find men who willingly engage in hard, solid thinking. There is an almost universal quest for easy answers and half-baked solutions. Nothing pains some people more than having to think.
***There is little hope for us until we become toughminded enough to break loose from the shackles of prejudice, half-truths, and downright ignorance. The shape of the world today does not permit us the luxury of softmindedness. A nation or civilization that continues to produce softminded men purchases its own spiritual death on the installment plan. But we must not stop with the cultivation of a tough mind. The gospel also demands a tender heart. … What is more tragic than to see a person who has risen to the disciplined heights of toughmindedness but has at the same time sunk to the passionless depths of hardheartedness?
— Strength to Love, 1963