《公孙龙子·名实论》
以正确的概念来校正不正确的概念，又以不正确的概念的失误之处，反过来探究正确的概念之所以正确的所在。
以其所正，正其所不正；以其所不正，疑其所正。
To correct an incorrect concept with a correct one, and in turn, to explore the reason why the correct concept is correct, based on the errors in the incorrect concept.