They had been corrupted by money, and he had been corrupted by sentiment. Sentiment was the more dangerous, because you couldn’t name its price. A man open to bribes was to be relied upon below a certain figure, but sentiment might uncoil in the heart at a name, a photograph, even a smell remembered.
Graham Greene...and yet could swear it was just then that I fell in love. It wasn't, of course, simply the onions -- it was the sudden sense of an individual woman, of a frankness that was so often later to make me happy and miserable.
Graham Greene