Herbert Spencer in the context of "Sociologist"

Progress is movement towards a perceived refined, improved, or otherwise desired state. It is central to the philosophy of progressivism, which interprets progress as the set of advancements in technology, science, and social organization efficiency – the latter being generally achieved through direct societal action, as in social enterprise or through activism, but being also attainable through natural sociocultural evolution – that progressivism holds all human societies should strive towards.

The concept of progress was introduced in the early-19th-century social theories, especially social evolution as described by Auguste Comte and Herbert Spencer. It was present in the Enlightenment's philosophies of history. As a goal, social progress has been advocated by varying realms of political ideologies with different theories on how it is to be achieved.

Isidore Auguste Marie François Xavier Comte (/kɒnt/; French: [oɡyst(ə) kɔ̃t] ; 19 January 1798 – 5 September 1857) was a French philosopher, mathematician and writer who formulated the doctrine of positivism. He is often regarded as the first philosopher of science in the modern sense of the term. Comte's ideas were also fundamental to the development of sociology, with him inventing the very term and treating the discipline as the crowning achievement of the sciences.

Influenced by Henri de Saint-Simon, Comte's work attempted to remedy the social disorder caused by the French Revolution, which he believed indicated an imminent transition to a new form of society. He sought to establish a new social doctrine based on science, which he labeled positivism. He had a major impact on 19th-century thought, influencing the work of social thinkers such as John Stuart Mill and George Eliot. His concept of Sociology and social evolutionism set the tone for early social theorists and anthropologists such as Harriet Martineau and Herbert Spencer, evolving into modern academic sociology presented by Émile Durkheim as practical and objective social research.

"Survival of the fittest" is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection. The biological concept of fitness is defined as reproductive success. In Darwinian terms, the phrase is best understood as "survival of the form that in successive generations will leave most copies of itself."

Herbert Spencer first used the phrase, after reading Charles Darwin's On the Origin of Species, in his Principles of Biology (1864), in which he drew parallels between his own economic theories and Darwin's biological ones: "This survival of the fittest, which I have here sought to express in mechanical terms, is that which Mr. Darwin has called 'natural selection', or the preservation of favoured races in the struggle for life."

In 18th- and 19th-century German philosophy, a Zeitgeist (German pronunciation: [ˈtsaɪtɡaɪst] ; lit. 'spirit of the age'; capitalized in German) is a way of referring to the intellectual, cultural, ethical and political climate of a given epoch in world history. It is often described as an invisible agent, force, or daemon that seems to dominate the characteristics of a particular period. The term is usually associated with Georg W. F. Hegel, contrasting with Hegel's use of Volksgeist ("national spirit") and Weltgeist ("world-spirit"), although the word itself predates Hegel and was popularized by Johann Gottfried Herder and Johann Wolfgang von Goethe.

The expression belongs to a wider family of notions such as "spirit of the age", "spirit of the times" or genius saeculi ("spirit of the century"), which had circulated in Latin and the major European languages since the early modern period to express the idea that people's thoughts and actions are shaped by the social environment of their time rather than only by timeless truths or individual genius. In 1769 Herder translated the Latin phrase genius seculi used by the philologist Christian Adolph Klotz as Zeitgeist in his aesthetic essay Kritische Wälder, and the term was taken up in later discussions of philosophy of history and history of ideas. Other philosophers who were associated with related ideas include Herbert Spencer and Voltaire.

Structural linguistics, or structuralism, in linguistics, denotes schools or theories in which language is conceived as a self-contained, self-regulating semiotic system whose elements are defined by their relationship to other elements within the system. It is derived from the work of Swiss linguist Ferdinand de Saussure and is part of the overall approach of structuralism. Saussure's Course in General Linguistics, published posthumously in 1916, stressed examining language as a dynamic system of interconnected units. Saussure is also known for introducing several basic dimensions of semiotic analysis that are still important today. Two of these are his key methods of syntagmatic and paradigmatic analysis, which define units syntactically and lexically, respectively, according to their contrast with the other units in the system. Other key features of structuralism are the focus on systematic phenomena, the primacy of an idealized form over actual speech data, the priority of linguistic form over meaning, the marginalization of written language, and the connection of linguistic structure to broader social, behavioral, or cognitive phenomena.

Structuralism as a term, however, was not used by Saussure, who called the approach semiology. The term structuralism is derived from sociologist Émile Durkheim's anti-Darwinian modification of Herbert Spencer's organic analogy which draws a parallel between social structures and the organs of an organism which have different functions or purposes. Similar analogies and metaphors were used in the historical-comparative linguistics that Saussure was part of. Saussure himself made a modification of August Schleicher's language–species analogy, based on William Dwight Whitney's critical writings, to turn focus to the internal elements of the language organism, or system. Nonetheless, structural linguistics became mainly associated with Saussure's notion of language as a dual interactive system of symbols and concepts. The term structuralism was adopted to linguistics after Saussure's death by the Prague school linguists Roman Jakobson and Nikolai Trubetzkoy; while the term structural linguistics was coined by Louis Hjelmslev.

Individualist anarchism in the United States was strongly influenced by Benjamin Tucker, Josiah Warren, Ralph Waldo Emerson, Lysander Spooner, Pierre-Joseph Proudhon, Max Stirner, Herbert Spencer and Henry David Thoreau. Other important individualist anarchists in the United States were Stephen Pearl Andrews, William Batchelder Greene, Ezra Heywood, M. E. Lazarus, John Beverley Robinson, James L. Walker, Joseph Labadie, Steven Byington and Laurance Labadie.

The first American anarchist publication was The Peaceful Revolutionist, edited by Warren, whose earliest experiments and writings predate Proudhon. According to historian James J. Martin, the individualist anarchists were socialists, whose support for the labor theory of value made their libertarian socialist form of mutualism a free-market socialist alternative to both capitalism and Marxism.

The X Club was a dining club of nine men who supported the theories of natural selection and academic liberalism in late 19th-century England. Thomas Henry Huxley was the initiator; he called the first meeting for 3 November 1864. The club met in London once a month—except in July, August and September—from November 1864 until March 1893, and its members are believed to have wielded much influence over scientific thought. The members of the club were George Busk, Edward Frankland, Thomas Archer Hirst, Joseph Dalton Hooker, Thomas Henry Huxley, John Lubbock, Herbert Spencer, William Spottiswoode, and John Tyndall, united by a "devotion to science, pure and free, untrammelled by religious dogmas."

The nine men who would compose the X Club already knew each other well. By the 1860s, friendships had turned the group into a social network, and the men often dined and went on holidays together. After Charles Darwin's On the Origin of Species was published in 1859, the men began working together to aid the cause for naturalism and natural history. They backed the liberal Anglican movement that emerged in the early 1860s, and both privately and publicly supported the leaders of the movement.