The quote "Folly is a child of power" from Barbara W. Tuchman's book "The March of Folly: From Troy to Vietnam" suggests that foolish decisions often arise from those in positions of authority. Tuchman explores how leaders, blinded by their power, may make irrational choices that lead to disastrous outcomes. These examples span history, showing that even the most powerful figures can fall prey to folly due to arrogance or ignorance.

In the context of Tuchman's analysis, the phrase underscores a recurring theme where the hubris associated with power can prevent leaders from seeing the truth or heeding wise counsel. The book examines various historical events, revealing that folly is not simply a personal failing, but often a systemic issue linked to the nature of power itself. This perspective encourages a critical look at leadership and the consequences of misguided decisions throughout history.