“It seemed...that intelligence wasn't as pure and unalterable a characteristic as people believed. Being intelligent was like being good: you could be virtuous in one person's company and yet wicked in another's. You could be intelligent with one person and stupid with another. It was partly to do with confidence...In a way she had been more confident when she had been eighteen and foolish. At twenty-three, with Michael, she felt less confident and therefore less intelligent.”