Expressionism was a cultural movement originating in Germany at the start of the 20th-century as a reaction to positivism and other artistic movements such as naturalism and impressionism. It sought to express the meaning of "being alive" and emotional experience rather than physical reality. It is the tendency of an artist to distort reality for an emotional effect; it is a subjective art form.
Expressionism is exhibited in many art forms, including painting, literature, theatre, film, architecture and music. The term often implies emotional angst. In a general sense, painters such as Matthias Grünewald and El Greco can be called expressionist, though in practice, the term is applied mainly to 20th century works.
Although it is used as a term of reference, there has never been a distinct movement that called itself "expressionism", apart from the use of the term by Herwald Walden in his polemic magazine Der Sturm in 1912. The term is usually linked to paintings and graphic work in Germany at the turn of the century which challenged the academic traditions, particularly through the Die Brücke and Der Blaue Reiter groups. Philosopher Friedrich Nietzsche played a key role in originating modern expressionism by clarifying and serving as a conduit for previously neglected currents in ancient art.
In The Birth of Tragedy Nietzsche presented his theory of the ancient dualism between two types of aesthetic experience, namely the Apollonian and the Dionysian; a dualism between the plastic "art of sculpture", of lyrical dream-inspiration, identity (the principium individuationis), order, regularity, and calm repose, and, on the other hand, the non-plastic "art of music", of intoxication, forgetfulness, chaos, and the ecstatic dissolution of identity in the collective. The analogy with the world of the Greek gods typifies the relationship between these extremes: two godsons, incompatible and yet inseparable. According to Nietzsche, both elements are present in any work of art.
The basic characteristics of expressionism are Dionysian: bold colours, distorted forms-in-dissolution, two-dimensional, without perspective.