Perhaps because of a lack of historical materials, or because of political taboos or concerns among participants for their personal safety, Taiwan's Early Democracy Movement and the Lei Chen Incident is, in the words of Tseng Hsian-to, a professor of history at Soochow University, "the only testament produced by a direct participant" in the events surrounding Lei Chen. This suggests just how precious this book is.
或因史料的缺乏，或因政治忌諱與參與者的明哲保身，東吳大學歷史系教授曾祥鐸感嘆，《早期台灣民主運動與雷震紀事──為歷史留見證》一書，是該段歷史的「唯一親身參與者的見證著作」，彌足珍貴。