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, judgements 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 interpretations can often be found: In the widest sense, the concept of expression refers to the activity undertaken with a specific intention.
[6] Expression can also be defined as part of the communication process which consists of two complementary components, expression (transmitted information) and impression (received information).