“That which does not kill us makes us stronger.”
— Friedrich Nietzsche, Twilight of the Idols
What this quote means
From "Maxims and Arrows." Nietzsche’s claim is not that all suffering strengthens, but that adversity met with the right attitude becomes formative — a thread that connects to amor fati and his ideal of life-affirmation.
The idea behind it
Amor Fati — The Latin phrase "love of fate" — embracing everything that happens, including suffering, not merely tolerating it.
Twilight of the Idols is public domain; attribution verified. Confidence: high.