近十年来,“宪法审查”成为了中国法学界的研究热点之一,成果数量颇丰。可值得注意的是,其中有相当部分属于从理论到理论的“灰色”研究。作为舶来品,从“拿来主义”的角度出发,这种“灰色”研究不失其必要性。但为了让宪法获得生命,让宪法之树常青,单纯的理论推演怕是很难满足制度设计的需要。是故,从理论到实践的“绿色”研究就越发应该获得重视。“宪法审查的原理与技术丛书”便是将“体”(原理)转化为“用”(技术)的尝试。而刘练军博士的《消极主义:宪法审查的一种哲学立场》(以下简称《消极主义》), In the past ten years, “Constitutional Review” has become one of the hot topics in the field of Chinese jurisprudence, with a great number of achievements. It is worth noting that a considerable part of them belong to the “gray” research from theory to theory. As a foreign product, from the perspective of “used ”, this “gray ” study without losing its necessity. However, in order to get the constitutional life and make the constitutional tree evergreen, it is very difficult to meet the needs of the system design simply by deducing the theory. Therefore, more and more attention should be paid to the “green” research from theory to practice. The Principles and Techniques of Constitutional Review Series are the attempt to translate the “body” (principle) into “use” (technology). Dr. Liu Lianjun’s “Negativeism: A Philosophical Standpoint of Constitutional Review” (hereinafter referred to as “Negativeism”),