While in New Bilibid Prison, Taruc composed "He Who Rides the Tiger" (1967). Luis wrote, "I know now from experience, that the nationalism of the Communists is indeed opportunism, and that they use it for their own ends. Any nationalist who makes an ally of the Communist is going for a ride on a tiger." Additionally, Luis wrote, "For ruthlessness and cruelty are alien to Christian thought, and when men in the Free World use such methods, they do so in defiance of their own morality and ideals. The atheist Communist, however, believes that the end justifies the means, or in Lenin's words, 'Morality is subordinate to the class struggle.' For this reason, the Communist can pursue a policy of terror and cruelty with a clear conscience."