Constructive Realism, an increasingly discussed philosophy of science founded by the Viennese philosopher of science Fritz G. Wallner, is the core issue of the texts gathered in this volume. The authors either discuss the constructive-realistic view philosophically or present their research interpreted by the constructive-realistic doctrine. Constructive Realism inspires philosophy as well as natural science and humanities. This volume proves this inspiring feature of Constructive Realism. All texts are written by colleagues, friends and scholars of Fritz G. Wallner to honour his 60th birthday.