There were two ways of forgetting. For many years, he had envisioned (unimaginatively) a vault, and at the end of the day, he would gather the images and sequences and words that he didn’t want to think about again and open the heavy steel door only enough to hurry them inside, closing it quickly and tightly. But this method wasn’t effective: the memories seeped out anyway. The important thing, he came to realize, was to eliminate them, not just to store them. So he had invented some solutions. For small memories—little slights, insults—you relived them again and again until they were
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