The quote ""that which does not kill you makes you stronger"" is associated with the German Philosopher Friedrich Nietzsche.
The quote is a part aphorism number 8 of the Maxims and Arrow section of his book named "Twilight of the Idols" . It was published in 1888.
When applied in practical life, it talks about a causal relationship between failure and future success. The philosopher had this attached to life.
Friedrich Nietzsche was a German philosopher. He was also a cultural critic and a philologist. Modern intellectual history was deeply influenced by his works.
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