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Philosophy

On Bullshit

Harry G. Frankfurt · 2005 · 10 ideas · 10 min

Bullshitting differs fundamentally from lying because the liar still respects truth enough to conceal it, while the bullshitter is simply indifferent to whether anything they say is true, making bullshit the deeper threat to honest communication.

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Why this book

Harry Frankfurt argues that despite how common the word "bullshit" is in everyday speech, no one had rigorously analyzed what actually distinguishes it from lying, and that this distinction matters more than it first appears. A liar, in his account, is still oriented toward the truth: they know what's true and deliberately construct a falsehood to obscure it, which means they remain, in a strange sense, answerable to reality. A bullshitter has no such relationship to truth at all; their statements are selected or invented purely for effect, with no concern for whether they correspond to anything real.

This distinction matters because it reveals bullshit as, in Frankfurt's view, a more corrosive threat to honest discourse than outright lying. Where lying at least implicitly acknowledges that truth exists and matters, sustained indifference to truth erodes the very practice of trying to get things right, and normalizes speech disconnected entirely from any commitment to accuracy, a condition Frankfurt sees as pervasive in advertising, public relations, and political rhetoric.

Who should read it

Anyone interested in the philosophy of language, media literacy, or the ethics of public communication, particularly readers wanting precise vocabulary for a phenomenon they've always sensed but couldn't quite name. It's a short, accessible read suited even to those with no background in formal philosophy.

About the author

Harry G. Frankfurt was an American moral philosopher and professor emeritus at Princeton University, known for his work on free will, personal identity, and the philosophy of love, in addition to this widely read essay-turned-book.

The ideas

01Bullshit is pervasive, yet almost no one had rigorously defined it before this book02Lying requires knowing the truth in order to successfully hide it03The bullshitter's defining trait is total indifference to whether statements are true04Because bullshit ignores truth's authority entirely, it's a deeper threat than lying05Bullshit often arises when people are required to speak beyond their actual knowledge06Advertising and public relations are industries substantially built on bullshit07Bullshit is a broader category than mere nonsense or gibberish08Bullshitting can, over time, erode a person's own capacity to distinguish truth from falsehood09Sincerity, not accuracy, has become many people's substitute standard for honesty10Recognizing the difference between lying and bullshit sharpens how we judge public speech
truthlanguageethicsrhetoricmedia-literacy
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