According to Nguyen Hien Le: "I have written four - fifty prefaces and introductions for my works and two dozen for my friend's works. Someone asked me to write a preface for two or three books. Chau Hai Ky once advised me to select the most satisfactory articles, put them into a collection like a French writer. I didn't do it, which annoyed him, but in 1975 I also selected a few articles, memoirs, compiled into a booklet: "Let me read again". Today, according to Nguyen Hien Duc: "Reading those titles again, we see that Nguyen Hien Le always loves readers, loves topics and is always honest with himself. So for me, the foreword of Nguyen Hien Le - sometimes only 2-3 pages, sometimes up to 20 - 30 pages - are great works really valuable and rare."