Expression (Lat. expressio) in architecture implies a clear and authentic displaying of the character or personality of an individual (architect). The expression is often identified with the architectural movement of expressionism, whose main starting point and aim is to present and express what has been „seen“ or experienced in the inner eye of the mind, heart and soul, i.e. to express the subjective moods and feelings without referring to conventional and „objective” values, judgments and truths. The main problem in the critical analysis of the theoretical interpretations of the concept of expression in architecture, lies in the fact that the concept of expression is used in different ways in different fields of science and art. Regarding the concept of expression, the following interpre