During his lifetime， Lawrence published only one book of criti-cism， Studies iClassic AmericaLiterature. But， ifact， he did en-gage himself constantly ireviewing books， doing prefaces and intro-ductions for works that impressed him， and writing a number of excel-lent， most perceptive essays of criticism that British literature has everproduced othe novel as a genre， oits moral values and social func-tion， othe questioof pornography as well as the subtle impact of Pu-ritanism upothe arts. Besides， the large amount of Lawrence's per-sonal letters and correspondence is also ainvaluable treasury of his lit-erary reflections and criticisms.