* Cicero's De Re Publica, published as M Tullii Ciceronis de republica quae supersunt, Rome, 1822

De Vita Ciceronis.

* Omnibonus Leonicenus: De laudibus eloquentiae and Commentum in Ciceronis Oratorem, Vicenza, 22 December 1476, folio

He had been associated with Orelli in his great work on Cicero, and assisted in Ciceronis Scholiastae ( 1833 ) and Onomasticon Tullianum ( 1836 – 1838 ).

The first of the works by which he is known was published anonymously in 1608, with the title Ciceronis Princeps, a laborious compilation of all Cicero's remarks on the origin and principles of regal government, digested and systematically arranged.

During the reigns of Claudius and Nero he compiled for his sons, from various sources -- e. g. the Gazette ( Aetablica ), shorthand reports or skeletons ( commentarii ) of Cicero's unpublished speeches, Tiro's life of Cicero, speeches and letters of Cicero's contemporaries, various historical writers, e. g. Varro, Atticus, Antias, Tuditanus and Fenestella ( a contemporary of Livy whom he often criticizes ) -- historical commentaries on Cicero's speeches, of which only five, viz, in Pisonem, pro Scauro, pro Milone, pro Cornelio and in toga candida, in a very mutilated edition, are preserved, under the modern title Q. Asconii Pediani Orationvm Ciceronis qvinqve enarratio.

* Austin, R G: M. Tulli Ciceronis pro M. Caelio oratio, 3rd edition ( Oxford University Press, 1960 ),

* Charles Anthon, M. Tullii Ciceronis Orationes Selectae, ex recensione Jo.

* Pease, Arthur Stanley, M. Tulli Ciceronis de Divinatione, 2 vol., Urbana 1920 – 1923 ( reprint Darmstadt 1963 ).

* De Officiis Ministrorum ( On the Offices of Ministers, an ecclesiastical handbook modeled on Cicero's De Officiis.

At a time when self-sale contracts were one of the most direct ways to become a citizen in ancient Rome, Cicero wrote in his De Officiis that

The quintessential explanation of just war theory in the ancient world is found in Cicero's De Officiis, Book 1, sections 1. 11. 33 – 1. 13. 41.

Cicero's De Officiis contains the phrase cedant arma togae: literally, " let arms yield to the toga ", meaning " may peace replace war ", or " may military power yield to civilian power ".

At the end of the republican period, Cicero ( De Officiis, ii.

* De Officiis

Besides the Speculum Richard also wrote, according to the statement of William of Woodford in his Answer to Wycliffe ( Edward Brown, Fasciculus Rerum expetendarum, p. 193 ), a treatise De Officiis ; and there was formerly in the cathedral library at Peterborough another tractate from his pen, entitled Super Symbolum.

III, 1-110 ), styled " De Officiis Ecclesiasticis ", and a series of documents and charters, all more or less bearing on the construction of the cathedral at Old Sarum, the foundation of the cathedral body, the treasures belonging to it, and the history of dependent churches.

* Cicero, De Officiis ( ca 20 BC ) I, C. IO, III, cc.

On Duties ( De Officiis ): De Officiis

Roman philosopher and statesman Cicero ( 106-43 BC ) explained the virtues in his work De Officiis.

He is responsible too for the first edition printed of Cicero's De Officiis in 1556 by Nicholas Grimald, who would later contribute to the poetry anthology.

Support for tyrannicide can be found in Plutarch's Lives, Cicero's De Officiis, and Thomas Aquinas's commentary on the Sentences of Peter Lombard.

De Officiis ( On Duties or On Obligations ) is an essay by Marcus Tullius Cicero divided into three books, in which Cicero expounds his conception of the best way to live, behave, and observe moral obligations.

De Officiis was written in October – November 44 BC, in under four weeks.

De Officiis has been characterized as an attempt to define ideals of public behavior.

Like the satires of Juvenal, Cicero's De Officiis refers frequently to current events of his time.

Following the invention of the printing press, De Officiis was the second book to be printed — second only to the Gutenberg Bible.

* History of Scotland, De origine, moribus, ac rebus gestis Scotiae libri decem, John Leslie

His most famous work, the De re metallica libri xii long remained a standard work, and marks its author as one of the most accomplished chemists of his time.

De inventione dialectica libri tres ( Tübingen: Niemeyer, 1992 ).

* J. R. McNally, " Rudolph Agricola's De inventione dialectica libri tres: A Translation of Selected Chapters ," Speech Monographs 34. 4 ( 1967 ): 393-422.

In 1561, Daniel Santbech compiled a collected edition of the works of Regiomontanus, De triangulis planis et sphaericis libri quinque ( first published in 1533 ) and Compositio tabularum sinum recto, as well as Santbech's own Problematum astronomicorum et geometricorum sectiones septem.

De Triangulis Planis et Sphaericis libri quinque.

* Pomponius Mela, Roman geographer, writes De situ orbis libri ( probable date ).

The modern petrological term basalt describing a particular composition of lava-derived rock originates from its use by Georgius Agricola in 1556 in his famous work of mining and minerology De re metallica, libri XII.

Thence, however, he continued to govern his diocese, while he found leisure for the preparation of two of the most important of his contributions to dogmatic and polemical theology: the De synodis or De fide Orientalium, an epistle addressed in 358 to the Semi-Arian bishops in Gaul, Germany and Britain, expounding the true views ( sometimes veiled in ambiguous words ) of the Eastern bishops on the Nicene controversy ; and the De trinitate libri XII, composed in 359 and 360, in which, for the first time, a successful attempt was made to express in Latin the theological subtleties elaborated in the original Greek.

* De causa Dei contra Pelagium et de virtute causarum ad suos Mertonenses, libri tres ( In Defense of God Against the Pelagians and On the Power of Causes, in three books ), edited by Henry Savile, London: 1618 ; reprinted at Frankfurt: Minerva, 1964.

** De analogia libri II ad M. Tullium Ciceronem

For the modern reader, his autobiography ( De vita sua sive monodiarum suarum libri tres ), or Monodiae ( Solitary Songs, commonly referred to as his Memoirs ), written in 1115, is considered the most interesting of his works.

* De Re Poëtica libri septem ( 1565 )

The De schismate libri III, completed on May 25, 1410, describes the history of events since 1376 as Niem himself had seen them.

A passage from Dietrich of Nieheim's De schismate libri III is used as an epigram at the beginning of the second chapter of Arthur Koestler's novel, Darkness at Noon:

In 1672 appeared the De jure naturae et gentium libri octo, and in 1675 a résumé of it under the title of De officio hominis et civis (" On the Duty of Man and Citizen "), which, among other topics, gave his analysis of just war theory.

To this new period belong Einleitung zur Historie der vornehmsten Reiche und Staaten, also the Commentarium de rebus suecicis libri XXVI., ab expeditione Gustavi Adolphi regis in Germaniam ad abdicationem usque Christinae and De rebus a Carolo Gustavo gestis.

* De officio hominis et civis juxta legem naturalem libri duo or " On The Duty of Man and Citizen According to the Natural Law " ( 1673 )

In 1850 published an important critical edition of the Lives of Eminent Philosophers ( Diogenis Laertii De Clarorum philosophorum vitis, dogmatibus et apophthegmatibus libri decem, Pariisis, Didot ).

There, he wrote a number of his major works: " De fide Trinitatis libri III " (" On Faith in the Trinity: Three Books "), " Eclogarum ex divinis Scripturis liber primus " (" Excerpts out of Divine Scriptures: One Book "), and " Commentarii in epistolas S. Pauli " (" Commentary on the Epistles of Saint Paul ").

Augustine wrote four letters specifically on Pelagianism, " De peccatorum meritis et remissione libri III " ( Three Books on the Merits and Forgiveness of Sins ) in 412, " De spiritu et litera " ( On the Spirit and the Letter ) and " Definitiones Caelestii " ( Caelestius's Definitions ) in 414, and " De natura et gratia " ( On Nature and Grace ) in 415.