Edit] Late 1800s to early 1900s

Henri Matisse, Le bonheur de vivre, 1905-6, Barnes Foundation, Merion, PA. An early Fauvist masterpiece.

In the 1890s a strand of thinking began to assert that it was necessary to push aside previous norms entirely, instead of merely revising past knowledge in light of current techniques. The growing movement in art paralleled such developments as the Theory of Relativity in physics; the increasing integration of the internal combustion engine and industrialization; and the increased role of the social sciences in public policy. It was argued that, if the nature of reality itself was in question, and if restrictions which had been in place around human activity were falling, then art, too, would have to radically change. Thus, in the first fifteen years of the 20th century a series of writers, thinkers, and artists made the break with traditional means of organizing literature, painting, and music.

Pablo Picasso, Les Demoiselles d'Avignon, 1907. Re-invented the art of painting, all of Picasso's friends even Henri Matisse and Georges Braque were upset when they saw this painting.

Powerfully influential in this wave of modernity were the theories of Sigmund Freud and Ernst Mach, who argued, beginning in the 1880s, that the mind had a fundamental structure, and that subjective experience was based on the interplay of the parts of the mind. All subjective reality was based, according to Freud's ideas, on the play of basic drives and instincts, through which the outside world was perceived. Ernst Mach developed a well-known philosophy of science, often called " positivism", according to which the relations of objects in nature were not guaranteed but only known through a sort of mental shorthand. This represented a break with the past, in that previously it was believed that external and absolute reality could impress itself, as it was, on an individual, as, for example, in John Locke's empiricism, with the mind beginning as a tabula rasa. Freud's description of subjective states, involving an unconscious mind full of primal impulses and counterbalancing self-imposed restrictions, was combined by Carl Jung with a belief in natural essence to stipulate a collective unconscious that was full of basic typologies that the conscious mind fought or embraced. Darwin's work had introduced the concept of " man, the animal" to the public mind, and Jung's view suggested that people's impulses toward breaking social norms were not the product of childishness or ignorance, but derived from the essential nature of the human animal.^{[ citation needed ]}

Friedrich Nietzsche championed a philosophy in which forces, specifically the 'Will to power', were more important than facts or things. Similarly, the writings of Henri Bergson championed the vital 'life force' over static conceptions of reality. All these writers were united by a romantic distrust of Victorian positivism and certainty. Instead they championed, or, in the case of Freud, attempted to explain, irrational thought processes through the lens of rationality and holism. This was connected with the century-long trend to thinking in holistic terms, which would include an increased interest in the occult, and " the vital force".

Out of this collision of ideals derived from Romanticism, and an attempt to find a way for knowledge to explain that which was as yet unknown, came the first wave of works, which, while their authors considered them extensions of existing trends in art, broke the implicit contract with the general public that artists were the interpreters and representatives of bourgeois culture and ideas. These " modernist" landmarks include the atonal ending of Arnold Schoenberg's Second String Quartet in 1908, the expressionist paintings of Wassily Kandinsky starting in 1903 and culminating with his first abstract painting and the founding of the Blue Rider group in Munich in 1911, and the rise of fauvism and the inventions of cubism from the studios of Henri Matisse, Pablo Picasso, Georges Braque and others in the years between 1900 and 1910.

Romanticism (or the Romantic Era) was an artistic, literary and intellectual movement that originated in the second half of the 18th century in Europe, and gained strength in reaction to the Industrial Revolution.^[1] In part, it was a revolt against aristocratic social and political norms of the Age of Enlightenment and a reaction against the scientific rationalization of nature.^[2] It was embodied most strongly in the visual arts, music, and literature, but had a major impact on historiography, ^[3] education^[4] and natural history.^[5]

The movement validated strong emotion as an authentic source of aesthetic experience, placing new emphasis on such emotions as trepidation, horror and terror and awe—especially that which is experienced in confronting the sublimity of untamed nature and its picturesque qualities, both new aesthetic categories. It elevated folk art and ancient custom to something noble, made of spontaneity a desirable character (as in the musical impromptu), and argued for a " natural" epistemology of human activities as conditioned by nature in the form of language and customary usage.

Romanticism reached beyond the rational and Classicist ideal models to elevate a revived medievalism and elements of art and narrative perceived to be authentically medieval, in an attempt to escape the confines of population growth, urban sprawl, and industrialism, and it also attempted to embrace the exotic, unfamiliar, and distant in modes more authentic than Rococo chinoiserie, harnessing the power of the imagination to envision and to escape.

The modern sense of a romantic character may be expressed in Byronic ideals of a gifted, perhaps misunderstood loner, creatively following the dictates of his inspiration rather than the mores of contemporary society.

Although the movement was rooted in the German Sturm und Drang movement, which prized intuition and emotion over Enlightenment rationalism, the ideologies and events of the French Revolution laid the background from which both Romanticism and the Counter-Enlightenment emerged. The confines of the Industrial Revolution also had their influence on Romanticism, which was in part an escape from modern realities; indeed, in the second half of the 19th century, " Realism" was offered as a polarized opposite to Romanticism.^[6] Romanticism elevated the achievements of what it perceived as heroic individualists and artists, whose pioneering examples would elevate society. It also legitimized the individual imagination as a critical authority, which permitted freedom from classical notions of form in art. There was a strong recourse to historical and natural inevitability, a zeitgeist, in the representation of its ideas.