Closely related to this attitude was his book De officio regis, the content of which was foreshadowed in his 33 conclusions: One should be instructed with reference to the obligations in regard to the kingdom — to see how the two powers, royal and ecclesiastical, may support each other in harmony in the body corporate of the Church.

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.

His works include: Ad Sabinum, a commentary on the jus civile, in over 50 books ; Ad edictum, a commentary on the Edict, in 83 books ; collections of opinions, responses and disputations ; books of rules and institutions ; treatises on the functions of the different magistrates — one of them, the De officio proconsulis libri x., being a comprehensive exposition of the criminal law ; monographs on various statutes, on testamentary trusts, and a variety of other works.

In 1561 he published anonymously De officio pii ac publicae tranquillitatis vere amantis viri in hoc religionis dissidio ( Basel ), in which, while holding that no one, on account of abuses, has a right utterly to subvert the Church, he does not disguise his dislike of those who exaggerated the papal claims.

In his poem on Wolfgang Ernst, Count of Ysenburg, Büdingen and Birstein (" De pii magistratus officio "), he asked the Christian governments for a reformation of nation and church along the principles of the Bible and the Calvinist faith.

* De pii magistratus officio ( Poem on Wolfgang Ernst, Earl of Ysenburg, Büdingen and Birstein ).

It was supposed, not without reason, to have been written to controvert the ideas contained in Bellarmine's " De officio principis christiani ".

* Folio 91 recto: Of the age of man ( De etate hominis )

Although he never returned to the complementary work he intended to write, On the Dignity of Human Nature, Bartolomeo Facio took up the task writing De excellentia ac praestantia hominis.

* De microcosmo deque magno mundi mysterio, et medicina hominis, ( Of the microcosm, of the great secrecy of the world, and the human medicine )

Dionysius translated standard works from Greek into Latin, principally the " Life of St. Pachomius ", the " Instruction of St. Proclus of Constantinople " for the Armenians, the " De opificio hominis " of St. Gregory of Nyssa, and the history of the discovery of the head of St. John the Baptist.

** Giovanni Pico della Mirandola – De hominis dignitate

On July 25, 1609 Jacobus Bontebal defended the theses De vocatione hominis ad salutem under Arminius's presidency.

* De physiognomia et de hominis procreatione, which saw no fewer than eighteen editions between 1477 and 1660.

* De aure et auditu hominis et animalium ( 1820 )

De hominis dignitate by Giovanni Pico della Mirandola ( 1463 – 1494 )

* Psychologia: hoc est, De hominis perfectione, animo et in primis ortu hujus, commentationes ac disputationes quorundam theologorum & philosophorum nostrae aetatis, Marburg 1590

* De Mediatoris Jesv Christi hominis Divinitate, Aequalitateque libellus.

# De aetatibus mundi et hominis ( On the Ages of the World and of Man )

Many of these are collected in a discourse by St. Augustine, De perfectione iustitiae hominis.

In De perfecta constitutione hominis in utero liber unus, published in 1616, he further explored the topic of embryogenesis.

Liceti further discussed the relationship between the microcosm of the human body and the macrocosm of the universe in his 1635 work De mundi et hominis analogia.

* De perfecta constitutione hominis in utero liber unus, Padua 1616.

* De mundi et hominis analogia, Udine 1635.

* De Graciansky, Pierre-Charles et al.

* Ethical works: De bono mortis ( Death as a Good ); De fuga saeculi ( Flight From the World ); De institutione virginis et sanctae Mariae virginitate perpetua ad Eusebium ( On the Birth of the Virgin and the Perpetual Virginity of Mary ); De Nabuthae ( On Naboth ); De paenitentia ( On Repentance ); De paradiso ( On Paradise ); De sacramentis ( On the Sacraments ); De viduis ( On Widows ); De virginibus ( On Virgins ); De virginitate ( On Virginity ); Exhortatio virginitatis ( Exhortation to Virginity ); De sacramento regenerationis sive de philosophia ( On the Sacrament of Rebirth, or, On Philosophy )

* Homiletic commentaries on the Old Testament: the Hexaemeron ( Six Days of Creation ); De Helia et ieiunio ( On Elijah and Fasting ); De Iacob et vita beata ( On Jacob and the Happy Life ); De Abraham ; De Cain et Abel ; De Ioseph ( Joseph ); De Isaac vel anima ( On Isaac, or The Soul ); De Noe ( Noah ); De interpellatione Iob et David ( On the Prayer of Job and David ); De patriarchis ( On the Patriarchs ); De Tobia ( Tobit ); Explanatio psalmorum ( Explanation of the Psalms ); Explanatio symboli ( Commentary on the Symbol ).

* 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:

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.

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.