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Cover of Telling Lies

Psychology

Telling Lies

by Paul Ekman · 2025 · 390 pages

4.43· 621 ratings

Psychologybook summaryEkman
Key Insights · 8 min

Telling Lies

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Lies Fail Due to Poor Planning or Uncontrolled Emotions

Not all lies fail. Some are performed flawlessly. Two Main Reasons for Failure. Lies often fail because of either a lack of preparation or an inability to control emotions. Liars may not anticipate the need to lie, or they may not have a well-rehearsed story. Even with preparation, strong emotions can cause behavioral slips, revealing the truth. Thinking and Feeling. The act of lying involves both cognitive and emotional processes. When a liar is caught off guard, they may stumble over their words or show signs of hesitation. When strong emotions are involved, the liar may struggle to conceal

Lesson 1: Lies Fail Due to Poor Planning or Uncontrolled Emotions

This insight from Telling Lies challenges conventional wisdom about success. Paul Ekman demonstrates through research and case studies that how we think and feel about the subject matters more than technical knowledge or raw intelligence.

Lesson 2: Concealment is Preferred, Falsification is Riskier

A core theme in Telling Lies is humility about what we can and cannot know. Paul Ekman shows that the most resilient people and systems aren't those that predict correctly — they're the ones built to survive being wrong.

Lesson 3: Fear, Guilt, and Delight Can Betray Deceit

This principle from Telling Lies is backed by Paul Ekman's extensive research and real-world examples. Understanding it deeply can shift how you approach decisions, relationships, and long-term planning in meaningful ways.

How to Apply Telling Lies's Lessons

The real value of Telling Lies lies in its applicability. After reading, the most important step is identifying which of Paul Ekman's principles speak most directly to your current situation.

Consider keeping a journal while reading — noting where the ideas challenge your current approach and where they confirm what you already suspected. The friction of your own resistance often points to the most important insights.

Key Quote

"Lies Fail Due to Poor Planning or Uncontrolled Emotions" — Paul Ekman, Telling Lies

About the Author

Paul Ekman is the author of Telling Lies. The book reflects years of research, observation, and synthesis of evidence from multiple disciplines.

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