However brief his ascendancy, the discredited prophet leaves behind a legacy. Most obvious are the problems created and left unresolved, commitments made and left unfulfilled, debts accrued and left unpaid. Less obvious, but for that reason more important, are the changes in perception. The prophet recasts our image of reality. Long after his departure, remnants of that image linger and retain their capacity to beguile: consider how the Wilsonian vision of the United States as crusader state called upon to redeem the world in World War I has periodically resurfaced despite Woodrow Wilson’s own manifest failure to make good on that expectation. The prophet declaims and departs. Yet traces of his testimony, however at odds with the facts, remain lodged in our consciousness.

Andrew J. Bacevich, “The War We Can’t Win”