One of the great liabilities of history is that all too many people fail to remain awake through great periods of social change. Every society has its protectors of the status quo and its fraternities of the indifferent who are notorious for sleeping through revolutions. But today our very survival depends on our ability to stay awake, to adjust to new ideas, to remain vigilant and to face the challenge of change. The large house in which we live demands that we transform this world-wide neighborhood into a world-wide brotherhood. Together we must learn to live as brothers or together we will be forced to perish as fools.
n. 挑战
v. 向 ... 挑战