Rav Joseph Soloveitchik, "Redemption Prayer, Talmud Torah," Tradition 17:2
Judaism, in contradistinction to mystical quietism, which recommended toleration of pain, wants man to cry out aloud against any kind of pain, to react indignantly to all kinds of injustice and unfairness. For Judaism held that the individual who displays indifference to pain and suffering, who meekly reconciles himself to the ugly, disproportionate and unjust in life, is not capable of appreciating beauty and goodness. Whoever permits his legitimate needs to go unsatisfied will never be sympathetic to the crying needs of others. A human morality based on love and friendship, on sharing in the travails of others cannot be practiced if the person's own need-awareness is dull and he does not know what suffering is.