Chapter 7, Part 7A - Lieh Tzu

In the Chin State, which was infested with robbers, there lived a certain Ch'i Yung, who was able to tell a robber by his face; by examining the expression of his eyes he could read his inmost thoughts.

The Marquis of Chin employed him in the inspection of hundreds and thousands of robbers, and he never missed a single one. The Marquis expressed his delight to Wên Tzu of Chao, saying: 'I have a man who, singlehanded, is ridding my whole State of robbers. He saves me the necessity of employing a whole staff of police.'

Wên Tzu replied: 'If your Highness relies on a detective for catching robbers, you will never get rid of them. And what is more, Ch'i Yung is certain sooner or later to meet with a violent end.'
~ Lionel Giles translation via Terebess Asia Online ~

Go here to read the introductory post to the chapters of the Book of Lieh Tzu.