Many of the shortcomings of literary criticism are the lack of theoretical courage. The reason why criticism is aphasia and absent is that there is no new and powerful theory and spirit that can be applied to support it, and there is nothing to say in my heart. What is healthy? Literary criticism? There are many standards. One of the most important standards is the ability to tolerate and rationally treat cultural practices that are different from their own cultural claims. What does this passage mean? ['Tolerance and rationality are the most important theoretical criteria in literary criticism.', 'Aphasia and absence of literary criticism are caused by a lack of theoretical courage.', 'Healthy literary criticism must have powerful new methods and new theories to support it.', 'Healthy literary criticism must be tolerant and rational in treating different cultural claims.']