Định Nghĩa và Ý Nghĩa của "it takes a thief to catch a thief"

What is the origin of the proverb "it takes a thief to catch a thief" and when to use it?

The idea behind the proverb "it takes a thief to catch a thief" can be traced back to ancient sources, such as in the ancient Greek epigram by Callimachus, who wrote, "Being a thief myself, I recognized the tracks of a thief." It reflects the idea that those who have knowledge or expertise in a specific area, particularly through their own involvement, can recognize patterns and behaviors that others might miss. The saying highlights the advantage of experience, even if gained through questionable means, in solving problems or achieving a goal.