Continuing our dissemination of the lectures delivered by Prof. Sebastián Soler at the Faculty of Law of the Federal University of Pelotas, we publish the one titled “Grounds for Justification of Conduct,” in which the master presents us, with the vigor and insight that distinguish him, the general theory of grounds excluding unlawfulness. The text we print was transcribed directly from the recording and is published without revision by the author. By Prof. Enrique Cury, who stands out among the new generation of Chilean criminal law scholars, we publish—from a philosophical perspective—observations on Culpability and Criminology.In the doctrinal section, the reader will also find two other works, authored by those responsible for the publication of this journal, on the crime of homicide and on the crimes of insurrection and conspiracy. The work on homicide constitutes a chapter of the new edition of our long-out-of-print work on the Special Part, accompanied by an appendix on motor vehicle traffic offenses. Nilo Batista’s article offers an excellent contribution to the study of highly topical subjects, to which doctrine in our country has dedicated little attention. Master Roberto Lyra is the author of two legal opinions (*pareceres*) dealing with subjects of particular interest: corporate criminal law and documentary forgery; and the criminal liability of the notary public.The Institute of Penal Sciences, as part of the curriculum renewal program at the Cândido Mendes Law School, promoted the preparation of Criminal Law Notebooks (*Cadernos de Direito Penal*) to be used as working materials in classes and seminars. These notebooks were prepared by Prof. Aníbal Bruno and will be issued in an independent publication. In this issue, the reader will find the first of these notebooks, concerning the Theory of Criminal Law (*Teoria da Lei Penal*). In our upcoming issues, we will publish the continuation of the series. Heleno Cláudio Fragoso
Note: This text is an English translation of the original preface published in Portuguese in the Revista de Direito Penal.