Han Fei
in his foreword to the "Han Feizi" praised Han Fei as a knowledgeable man with sharp, logical and firm arguments, supported by large amount of practical and realistic evidence. Han Fei's strict methods were appropriate in a context of social decadence. Phan Ngọc claimed that Han Fei's writings has three drawbacks, however: first, his idea of Legalism was unsuited to autocracy because a ruling dynasty will sooner or later deteriorate. Second, due to the inherent limitation of autocratic monarchy system, Han Fei did not manage to provide the solutions for all the issues that he pointed out. Third, Han Fei was wrong to think that human is inherently evil and only seeks fame and profit: there are humans who sacrificed their own profit for the greater good, including Han Fei himself. considered the "Han Feizi" to be superior to Machiavelli's "Prince", and claimed that Han Fei's ideology was highly refined for its era.