Jesus reminds us that the good life combines the toughness of the serpent and the tenderness of the dove. To have serpent-like qualities devoid of dovelike qualities is to be passionless, mean, and selfish. To have dovelike without serpent-like qualities is to be sentimental, anemic and aimless. We must combine strongly marked antitheses.

A Martin Luther King Treasury (ed. 1964)