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While every noble morality develops from a triumphant affirmation of itself, slave morality from the outset says No to what is "outside," what is "different," what is "not itself"; and this No is its creative deed.

Friedrich Nietzsche (2009). “Basic Writings of Nietzsche”, p.472, Modern Library
While every noble morality develops from a triumphant affirmation of itself, slave morality from the outset says No to what is outside, what is different, what is not itself; and this No is its creative deed.