In Mary Roach's book "Grunt: The Curious Science of Humans at War," she explores the idea that true courage often involves the ability to challenge the prevailing thoughts of those around us. When people conform to societal norms, stepping away from those ideas requires bravery, as it can lead to isolation or conflict. Roach emphasizes that this mental fortitude is essential, especially in challenging environments like war, where independent thinking can significantly impact survival and decision-making.

The quote highlights the deeper meaning of courage, suggesting it is not always about physical acts of bravery. Instead, it acknowledges the strength it takes to stand out and think differently in a world that often pressures individuals to conform. This perspective invites readers to reflect on their own beliefs and the courage needed to uphold them, even when faced with societal opposition.