Jesus recognized the need for blending opposites. He knew that his disciples would face a difficult and hostile world, where they would confront the recalcitrance of political officials and the intransigence of the protectors of the old order. He knew that they would meet cold and arrogant men whose hearts had been hardened by the long winter of traditionalism. ... And he gave them a formula for action, "Be ye therefore as wise as serpents, and harmless as doves." ... We must combine the toughness of the serpent with the softness of the dove, a tough mind and a tender heart.