No More Learning

For Marcus, the essential thing was not to invent or to compose, but to in uence
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244 THE INNER CITADEL
himself and produce an e ect upon himself Even if this e ect was e cacious at one moment, however, it would soon lose its strength, and the exercise would have to be begun again in order constantly to revive the certitude derived om the           rmulations ofthe principles and rules oflife.