As Diggins concludes regarding the highly influential Cooper Union speech of early 1860, " Lincoln presented Americans a theory of history that offers a profound contribution to the theory and destiny of republicanism itself.

* Bhartrihari ( c 450 – 510 CE ), early figure in Indic linguistic theory

In 1904, he also wrote a novel, Born Again, clearly inspired by the popular Utopian fantasy Looking Backward by Edward Bellamy, an early harbinger of the metaphysical turn his career would take with the theory of Lawsonomy.

In one such theory, put forward by Sir E. B. Tylor, early humans initially, through mere observation, recognized what might be called a soul, life-force, spirit, breath or animus within themselves ; that which was present in the body in life and absent in death.

Lavoisier also contributed to early ideas on composition and chemical changes by stating the radical theory, believing that radicals, which function as a single group in a chemical process, combine with oxygen in reactions.

In doing so, he placed a cornerstone in consolidating early phoneme theory.

Saint Thomas Aquinas's aesthetic is probably the most famous and influential theory among medieval authors, having been the subject of much scrutiny in the wake of the neo-Scholastic revival of the late 19th and early 20th centuries and even having received the approbation of the celebrated Modernist writer, James Joyce.

Jay comments that this is sometimes seen as an early reference to the idea of the transmission of grace through the apostolic succession which in later centuries was understood as being specifically transmitted through the laying on of hands by a bishop within the apostolic succession ( the " pipeline theory ").

As early as 1573, Thomas Digges had suggested that this theory should necessitate a parallactic shifting of the stars, and, consequently, if such stellar parallaxes existed, then the Copernican theory would receive additional confirmation.

Another view of the Buddhist theory of the self, especially in early Buddhism, is that the Buddhist theory is essentially an eliminativist theory.

The Big Bang theory is the prevailing cosmological model that describes the early development of the Universe.

Inflation and baryogenesis remain more speculative features of current Big Bang models: they explain important features of the early universe, but could be replaced by alternative ideas without affecting the rest of the theory.

The traditional ascription of the whole book to the prophet Joel was challenged in the late nineteenth and early twentieth centuries by a theory of a three stage process of composition: 1: 1 – 2: 27 were from the hand of Joel, and dealt with a contemporary issue ; 2: 28 – 3: 21 were ascribed to a continuator with an apocalyptic outlook.

According to this theory, the cycle of philosophical upheavals that in part drove the diversification of Buddhism into its many schools and sects only began once Buddhists began attempting to make explicit the implicit philosophy of the Buddha and the early suttas.

Axiomatic set theory was developed in response to these early attempts to study set theory, with the goal of determining precisely what operations were allowed and when.

The theory asserts that all currently living organisms on Earth share a common genetic heritage with each being the descendant from a single original species, though the suggestion of substantial horizontal gene transfer during early evolution has led to questions about monophyly of life.

Big Bang Nucleosynthesis is the theory of the formation of the elements in the early universe.

It was used for many years as a probe of physics at the time of the Big Bang, as the theory of Big Bang nucleosynthesis connects the abundances of primordial light elements with the features of the early universe.

Cosmological perturbation theory, which describes the evolution of slight inhomogeneities in the early universe, has allowed cosmologists to precisely calculate the angular power spectrum of the radiation, and it has been measured by the recent satellite experiments ( COBE and WMAP ) and many ground and balloon-based experiments ( such as Degree Angular Scale Interferometer, Cosmic Background Imager, and Boomerang ).

Developments in Cuba and Laos also suggested the advisability of an early summit meeting.

early suggested to the emperors and kings the expedient of rewarding their warriors with rich abbeys held in commendam.

In April 2007, it was reported that imaging analysis had discovered an early commentary on Aristotle's Categories in the Archimedes Palimpsest, and Robert Sharples suggested Alexander as the most likely author.

Writing three centuries later, Ibn Abi Zar suggested it was chosen early on by Abdallah Ibn Yasin because, upon finding resistance among the Gudala Berbers of Adrar ( Mauritania ) to his teaching, he took a handful of followers to erect a makeshift ribat ( monastery-fortress ) on an offshore island ( possibly Tidra island, in Arguin bay ).

This connection was first formally made by Dr George Bennett of the Australian Museum in 1871, but in the early 1990s, palaeontologist Pat Vickers-Rich and geologist Neil Archbold also cautiously suggested that Aboriginal legends " perhaps had stemmed from an acquaintance with prehistoric bones or even living prehistoric animals themselves ...

In 2003 a publication in Science received a large amount of press attention when it suggested that early humans may have practiced extensive cannibalism.

Some anthropologists have suggested that hominids and early humans living in the Paleolithic Era may have practiced cannibalism.

Some have suggested, however, that a fear of clowns may stem from early childhood experience, when infants begin to process and make sense of facial features.

Highly developed convolutions were also found, which in the early 20th century was suggested as the explanation of his genius.

For example, it has been suggested that, in the early 20th century Shanghai, “ Western food, and in particular identifiably nourishing items like milk, became a symbol of a neo-traditional Chinese notion of family .”

It has been suggested that it was Bedford, but what is known of the early history of Bedford's names, does not support this.

Joseph Jordania recently suggested, that dance, together with rhythmic music and body painting, was designed by the forces of natural selection at the early stage of hominid evolution as a potent tool to put groups of human ancestors in a battle trance, a specific altered state of consciousness.

The forest area change may follow a pattern suggested by the forest transition ( FT ) theory, whereby at early stages in its development a country is characterized by high forest cover and low deforestation rates ( HFLD countries ).

Brewster pressed its adoption on those in authority at least as early as 1820, two years before Fresnel suggested it, and it was finally introduced into lighthouses mainly through Brewster's persistent efforts.

A similar theory was suggested by Danish explorer, adventurer and Captain Johan Støckel in the early 20th century.

New Media theorist Lev Manovich suggested Vertov as one of the early pioneers of database cinema genre in his essay Database as a symbolic form.

It has been suggested that it may actually be the work of an early skeptic writer, possibly Carneades.

Researchers have suggested that early hominids were thus under evolutionary pressure to increase their capacity to create and use tools.

Scientists have also suggested that the discovery of the flute may help to explain " the probable behavioural and cognitive gulf between " Neanderthals and early modern human.

Conservative scholars consider internal evidences, such as the lack of the mention of the destruction of the Temple and a number of passages that they consider characteristic of an eyewitness, sufficient evidence that the gospel was composed before 100 and perhaps as early as 50 – 70: in the 1970s, scholars Leon Morris and John A. T. Robinson independently suggested earlier dates for the gospel's composition.

By tradition, the pagan Saxons were invited by Vortigern to assist in fighting the Picts and Irish, though archaeology has suggested some official settlement as landed mercenaries as early as the 3rd century.

Though Marcuse quickly distanced himself from Heidegger following Heidegger's endorsement of Nazism, it has been suggested by thinkers such as Juergen Habermas that an understanding of Marcuse's later thinking demands an appreciation of his early Heideggerian influence.

It has been suggested that the use of dogs for digging up mandrake is further corroboration of the association of this plant with Hecate ; indeed, since at least as early as the 1st century CE, there are a number of attestations to the apparently widespread practice of using dogs to dig up plants associated with magic.