The quote "What doesn't kill you makes you stronger" originates from the German philosopher Friedrich Nietzsche. It is part of aphorism number 8 from the "Maxims and Arrows" section of his 1888 book Twilight of the Idols (German: Was mich nicht umbringt, macht mich stärker)
. Nietzsche's original intent is often interpreted as meaning that surviving hardships can lead to greater strength or resilience. However, some scholars note that Nietzsche's view was more nuanced, suggesting that this strengthening applies particularly to those who are able to learn and grow from their suffering, and not necessarily to everyone. He also saw this idea in a broader evolutionary or existential context rather than as simple personal encouragement
. Modern research supports the idea that early-career failures or setbacks can promote future success and resilience, aligning with Nietzsche's adage in a practical sense. For example, a study from Northwestern University found that those who experience failure early but persist tend to perform better in the long term
. The quote has become a popular motivational phrase encouraging resilience, growth through adversity, and a positive mindset toward challenges. It has inspired many by emphasizing that overcoming difficulties can build inner strength and character
. In summary, "What doesn't kill you makes you stronger" is a famous Nietzschean aphorism highlighting the potential for growth through adversity, though its interpretation and application can vary depending on context.