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.

The Heart of the Matter (Penguin Great Books of the 20th Century) by Graham Greene

ISBN: 0140283323 This book is available from Amazon