Even beyond the 500th anniversary of 2009, Calvin and the consequences of the Reformation associated with his name have lost none of their fascination. Current questions and research projects revolve around the life, work and thoughts of the early modern theologian. The work contains the lectures of the tenth International Congress for Calvin Research (Bloemfontein 2010) and represents the latest state of Calvin research. The first part consists of all lectures by leading scientists from the history of the Reformation and theology, including Luca Baschera, Tony Lane and Wim Janse. They deal with the main topic of the congress, reconciliation. The thematically diverse second part contains short lectures, such as on Calvin's concept of theology or Calvin's understanding of freedom. Mimako Saito writes about Calvin's legacy in Japan. Like the publications of previous Calvin Congress lectures, this edition is intended to serve as a source and guide for future studies. The selection of the title, Calvinus clarissimus theologus, continues the tradition of quoting from an exchange of letters to Calvin. The title echoes the words of Johannes Storm, who praises Calvin as an "astute and learned theologian." Based on these words, Herman J. Selderhuis expresses the honorable commemoration of the Calvin expert and long-time secretary and member of the Presidium Wilhelm Heinrich Neuser, who died a few weeks before the start of the congress.