The article is dedicated to the memory of a famous scientist and teacher, Doctor of Law, Professor N.I. Trofimov, who would have turned 90 years old in 2018. A native Siberian born in a peasant family, he transitioned from a school teacher to a Doctor of Law, Professor, Dean of the Law Faculty of Irkutsk State University and Head of the Chair of Criminal Law. He successfully defended his Ph.D. thesis, and later his doctoral dissertation at M.V. Lomonosov Moscow State University. N.I. Trofimov had been engaged in research and teaching for over 40 years, he read courses of Criminal Law, Criminology and special courses. His numerous articles and monographs, reviews and textbooks were devoted to topical problems, mainly, the criminal and legal protection of the mental and physical development of minors. He researched such topics as the general concept of crime against the normal development of minors, encroachments on the development of minors, including their involvement in criminal and other anti-social activities, sexual abuse, coercion to common law marriage of persons under the marriageable age; he analyzed data on the identity of convicts and victims in cases of non-violent sexual crimes against minors. N.I. Trofimov responded promptly to important social and political events in the life of the country, giving them a legal assessment, and made proposals for improving criminal legislation. He is the author and contributing author of about 100 research, methodological and educational publications. He proved himself to be an experienced administrator who made a great contribution to the development of higher legal education in Eastern Siberia. The study of key problems of criminal law and criminology, started by N.I. Trofimov, has been continued by modern Russian and foreign researchers.
