Amor fati means “love of fate.” Nietzsche’s idea is stronger than just accepting what happens to you. Acceptance is: “This happened. I can’t change it.” Amor fati is whether you could eventually say: “This happened. It is part of my life. I would not erase it.” Nietzsche introduces the idea in his book The Gay Science: “I want more and more to perceive the necessary characters in things as the beautiful.” He follows this with: “Amor fati: let that henceforth be my love!” — Friedrich Nietzsche, The Gay Science, §276. Later, in Ecce Homo, he gives the clearest statement of what he means: “Not merely bear what is necessary… but love it.” — Nietzsche, Ecce Homo, “Why I Am So Clever,” §10. Amor fati means to stop spending your life fighting some imaginary part of your past. Nietzsche wants us to face it without assuming that everything happens for a reason (or a larger purpose). Amor fati is an affirmation of life even without the “everything happens for a reason.” That is also where Nietzsche differs from the Stoics. The Stoic had the belief that nature belongs to a rationally ordered whole. You can't control everything that happens, so wisdom means bringing your judgment into agreement with what you can't change. Nietzsche disagrees. In Beyond Good and Evil, he attacks the Stoic idea of simply “living according to nature,” arguing that the Stoics risk projecting their own ideals of rational order onto nature itself. For Nietzsche, nature is indifferent and without a human-centered purpose. Nietzsche also thinks suffering can become part of what produces depth. Reflecting on his own illness, he writes: “I am unspeakably more indebted to it than I am to my health.” He even says: “I owe my philosophy to it as well.” He explicitly says pain does not necessarily make us “better.” But suffering can become part of what "forms" us, depending on what we make from it. Nietzsche pushes this even further with eternal recurrence. In The Gay Science §341, he asks you to imagine that you were told: