Dieter Cremer's contribution to the field of theoretical chemistry

This legacy article reviews the contributions of Dieter Cremer (1944-2017) to the field of theoretical chemistry, highlighting his major accomplishments in method development and applied quantum chemistry, which has led to many advances in the field. His work reflects an extraordinary breadth and deep understanding of theory, which is needed to solve complex chemical problems. His passion for science has inspired many colleagues in the past and will do so in the future.