On Killing

The average and healthy individual has such an inner and usually unrealized resistance towards killing a fellow man that he will not of his own volition take life if it is possible to turn away from that responsibility. Innate resistance: Humans have a deep-seated aversion to killing members of their own species. This resistance is so strong that in many historical battles, a significant percentage of soldiers deliberately avoided killing enemy combatants, even at the risk of their own lives. Historical evidence: S.L.A. Marshall's groundbreaking research after World War II revealed that only 1

Lesson 1: Human resistance to killing is powerful and innate

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

Lesson 2: Physical and emotional distance facilitate killing

This insight from On Killing challenges conventional wisdom about success. Dave Grossman demonstrates through research and case studies that how we think and feel about the subject matters more than technical knowledge or raw intelligence.

Lesson 3: Authority and group dynamics override individual morality

This principle from On Killing is backed by Dave Grossman'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 On Killing's Lessons

The real value of On Killing lies in its applicability. After reading, the most important step is identifying which of Dave Grossman'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

"Human resistance to killing is powerful and innate" — Dave Grossman, On Killing

About the Author

Dave Grossman is the author of On Killing. The book reflects years of research, observation, and synthesis of evidence from multiple disciplines.