Encyclopedia

People, places, and concepts that appear across multiple books in the collection. Discover connections between texts.

Epitome of Ptolemy's Almagest (1496)

Picatrix (Ghayat al-Hakim)

+1 more

Ring of Gyges

A mythical artifact mentioned by Plato that allows its wearer to become invisible, used as a thought experiment to explore the nature of morality and the social contract.

4 books · 34 mentions

Opera Omnia (Complete Works)The Complete Works of Marsilio Ficino+1 more

Rarefaction and Density

The physical processes by which matter expands or contracts, used in early natural philosophy to explain the transformation of elements and the nature of the vacuum.

4 books · 33 mentions

Platonic Theology on the Immortality of Souls (1525 Edition)The Complete Works of Marsilio Ficino+1 more

Robert Morison

A Scottish botanist and taxonomist who was the first Professor of Botany at Oxford and a pioneer in the systematic classification of plants. He emphasized the importance of fruit and seed characteristics in botanical taxonomy.

4 books · 32 mentions

Methodus plantarum emendata et auctaPlantarum umbelliferarum distributio nova+1 more

Right Opinion

A Platonic epistemological concept referring to a belief that is true but lacks the rational justification required for it to be considered certain knowledge.

4 books · 29 mentions

Complete Works of Plato, translated by Marsilio Ficino (1518)Opera Omnia (Complete Works)+1 more

Ritual Purity

A state of ritual cleanliness required for participation in sacred rites, often emphasized in the Papyri Graecae Magicae and grimoire traditions as a prerequisite for successful invocation.

4 books · 28 mentions

The Eighth Book of MosesPapyri Graecae Magicae (Complete)+1 more

Reception

An astrological condition where one planet is located in a sign or dignity of another planet, indicating a cooperative or supportive relationship between the two celestial bodies.

4 books · 26 mentions

Aphoristic Astrology of Ptolemy, Hermes, and OthersEight Books on Astronomy+1 more

Rhone

A major river in Switzerland and France, historically significant as a boundary and trade route, frequently mentioned in Renaissance commentaries on Dante and Petrarch.

4 books · 26 mentions

Divine Comedy with Landino Commentary (1487 Incunabulum)The Great Art of Light and Shadow+1 more

Royal Law

A biblical and legal concept, specifically the commandment to love one's neighbor, regarded as the supreme principle governing human conduct.

4 books · 26 mentions

Complete Works of Plato, translated by Marsilio Ficino (1518)Plato: Complete Works (Ficino Translation)+1 more

Reason

3 books · 277 mentions

The mirror of simple soulsCy est le rommant de la roze+1 more

Rabbi Yose

3 books · 266 mentions

Sefer ha-Zohar (Cremona 1558)Sefer ha-Zohar (Mantua 1558)+1 more

Rabbi Abba

3 books · 261 mentions

Sefer ha-Zohar (Cremona 1558)Sefer ha-Zohar (Mantua 1558)+1 more

Rabbi Hiyya

3 books · 257 mentions

Sefer ha-Zohar (Cremona 1558)Sefer ha-Zohar (Mantua 1558)+1 more

Ramón Lull

3 books · 209 mentions

Ars brevisArticuli fidei sacrosanctae+1 more

Rabbi Hezekiah

3 books · 159 mentions

Sefer ha-Zohar (Cremona 1558)Sefer ha-Zohar (Mantua 1558)+1 more

Rabbi Yehuda

3 books · 151 mentions

Sefer ha-Zohar (Cremona 1558)Sefer ha-Zohar (Mantua 1558)+1 more

Ravelin

A triangular fortification structure located outside the main ditch of a fortress, often discussed in early modern military engineering and architectural treatises.

3 books · 133 mentions

Utriusque cosmi majoris scilicet et minoris metaphysica, physica atque technica historiaHistory of Both Worlds: Macrocosm+1 more

Rabbi Shimon (bar Yochai)

3 books · 115 mentions

Sefer ha-Zohar (Cremona 1558)Sefer ha-Zohar (Mantua 1558)+1 more

Rav Hamnuna the Elder

3 books · 111 mentions

Sefer ha-Zohar (Cremona 1558)Sefer ha-Zohar (Mantua 1558)+1 more

Reduction to the impossible

3 books · 87 mentions

David the Invincible: Works on Porphyry and AristotleCommentary on Euclid Book I+1 more

Rousseau

3 books · 87 mentions

Seances des ecoles normalesThe Varieties of Religious Experience+1 more

Ralph Cudworth

3 books · 83 mentions

Plotini Opera Omnia cum Ficini commentariisThe True Intellectual System of the Universe+1 more

Rhea Ilia

3 books · 81 mentions

De claris mulieribus (14th c. Italian translation, ed. Tosti 1841)De claris mulieribus (1473 Ulm incunabulum)+1 more

Real Distinction

3 books · 81 mentions

Oeuvres de Descartes Vol. VII (Meditationes)Discours de la Méthode suivi des Méditations Métaphysiques+1 more

Radical Humor

A fundamental concept in medieval and early modern physiology referring to the innate moisture or vital fluid that sustains life and heat.

3 books · 79 mentions

Musaeum hermeticum reformatum et amplificatumSylva Sylvarum (Latin edition)+1 more

Raymond Lullius

3 books · 73 mentions

Miracula chymico-medica (with Sendivogius Novum Lumen)The Hermetic Museum (Vol. 1)+1 more

Rose Cross

3 books · 69 mentions

The Highest Good: A Rosicrucian ApologyGeboorte Christi+1 more

Rupescissa

A 14th-century Franciscan alchemist and prophet known for his work on the quintessence and the medicinal application of distilled spirits.

3 books · 65 mentions

Musaeum Hermeticum (1677 Edition)Miracula chymico-medica (with Sendivogius Novum Lumen)+1 more

Richard Simon

3 books · 65 mentions

Abhandlung von freier Untersuchung des CanonCabalomachia hoc est artis cabalisticae oppugnatio. Diatriba exegetica, didascalica, catacritica duobus distincta capitibus, in quorum uno agitur de Cabala Hebraica, de Pythagorica in altero+1 more

Roman Forum

The central square of ancient Rome, which became a primary site for archaeological study and the recovery of classical antiquity during the Renaissance.

3 books · 64 mentions

Palladio: Quattro Libri (1616 Venice)Cusanus: De Vera Sapientia (1486-1488)+1 more

Revivification

The alchemical or occult concept of restoring life or form to a dead or decayed substance, often associated with the process of palingenesis.

3 books · 62 mentions

Hypnerotomachia Poliphili (1499 Aldine)Three Books of Occult Philosophy+1 more

Rubedo (Reddening)

3 books · 60 mentions

Vat.lat.7286Claviculae Salomonis et theosophia pneumatica, das ist, die warhafftige Erkänntnüss Gottes+1 more

Red and White tinctures

The two primary goals of the alchemical Great Work: the white tincture for transmuting base metals into silver and the red for gold.

3 books · 60 mentions

Turba Philosophorum (1572 Basel)The Hermetic Museum (Vol. 1)+1 more

Rhases

3 books · 59 mentions

Miracula chymico-medica (with Sendivogius Novum Lumen)Splendor Solis: The Splendour of the Sun+1 more

Rava

A prominent 4th-century Babylonian sage of the Talmud whose legal and mystical discussions are frequently cited in the Zohar and later Kabbalistic literature.

3 books · 58 mentions

Essence of PomegranatesThe Zohar: Book of Genesis+1 more

Rudolf Clausius

3 books · 56 mentions

Vorlesungen über Gastheorie, Bd. 1Vorlesungen über Gastheorie, Bd. 2+1 more

Rhegium

3 books · 56 mentions

Codex Sinaiticus (Tischendorf Facsimile)Ueber die alten und neuen Mysterien+1 more

Ramon Llull (Raymond)

3 books · 55 mentions

The Latin Works of Giordano BrunoThe Tree of Science+1 more

Rubedo

3 books · 55 mentions

Musaeum Hermeticum (1677 Edition)Fortalitium scientiae, das ist: Die unfehlbare volkommeliche unerschätzliche Kunst aller Künsten und magnalien+1 more

Rabbi Elazar

3 books · 55 mentions

De Arte Cabalistica (in Galatino, 1550)Sefer ha-Zohar (Mantua 1558)+1 more

Robert of Chester

3 books · 55 mentions

Lehigh Codex (15th c. Naples Alchemical MS)Traités dalchimie de Morienus Romanus+1 more

Rav Yehuda

3 books · 54 mentions

Sepher Maphteah Shelomo (Book of the Key of Solomon)The Zohar: Book of Genesis+1 more

Reason (Logos)

3 books · 53 mentions

Philokalia (Greek)Hermetica Vol. I: Texts and Translation+1 more

Roman Triumph

3 books · 53 mentions

De claris mulieribus (14th c. Italian translation, ed. Tosti 1841)Delle donne famose (De claris mulieribus)+1 more

Ramachandra

3 books · 53 mentions

Brihat Muhurta SindhuMuhurta Darpanam (Lalmani)+1 more

Rheticus

3 books · 53 mentions

Kepler: Astronomia Nova (1609 Prague)Mysterium Cosmographicum (1596 First Edition)+1 more

Regulus of Mars

3 books · 53 mentions

Reg.lat.1278Arca thesauris opulenta+1 more

Regimen of Health

3 books · 50 mentions

Conciliator Differentiarum Philosophorum et MedicorumEssays (1625 edition)+1 more

Relation (Relatio)

3 books · 50 mentions

The Tree of ScienceEnneads (1580 Basel editio princeps)+1 more

Righteousness of faith

A central Protestant doctrine asserting that a person's standing before God is achieved through faith in Christ rather than through human merit or works.

3 books · 49 mentions

Historical-Theological Considerations of Remarkable TruthsOtt.lat.2074+1 more

Roberto Salviati

3 books · 49 mentions

Pico della Mirandola: Opera (1496)Poliziano: Miscellaneorum (1489 Florence)+1 more

Rule of Three (Trairāśika)

3 books · 49 mentions

Lilavati of BhaskaracharyaGanita Kaumudi Part 1+1 more

Riverbanks

3 books · 49 mentions

YuddhaJayarnava5455Alm25Shlf1GhaDevanagariJyotish武備志(五十一)+1 more

Rational in power

A Euclidean concept referring to magnitudes that are not directly commensurable but whose squares are commensurable with a given rational area.

3 books · 48 mentions

Harmonices Mundi (1619 First Edition)Euclid: Elementa (1482 Ratdolt)+1 more

Revelation

The communication of knowledge from a divine source to humanity, forming the basis of religious authority and the mystical understanding of the cosmos and scripture.

3 books · 47 mentions

Key to the secrets of natureBehold the Man+1 more

Reverberatory furnace

3 books · 47 mentions

Lehigh Codex (15th c. Naples Alchemical MS)Theatrum Chemicum Vol. III (1602)+1 more

Representative Church

3 books · 47 mentions

Vera Christiana ReligioArcana Coelestia (Heavenly Arcana)+1 more

Regency

3 books · 47 mentions

Von etlichen frowen (1479 Augsburg - German translation)Delle donne famose (De claris mulieribus)+1 more

Robert Turner

3 books · 46 mentions

Fourth Book of Occult PhilosophyAgrippa Fourth Book of Occult Philosophy with Geomancy+1 more

Encyclopedia

Relation

Retrograde Planets

Ring of Gyges

Rarefaction and Density

Robert Morison

Right Opinion

Ritual Purity

Reception

Rhone

Royal Law

Reason

Rabbi Yose

Rabbi Abba

Rabbi Hiyya

Ramón Lull

Rabbi Hezekiah

Rabbi Yehuda

Ravelin

Rabbi Shimon (bar Yochai)

Rav Hamnuna the Elder

Reduction to the impossible

Rousseau

Ralph Cudworth

Rhea Ilia

Real Distinction

Radical Humor

Raymond Lullius

Rose Cross

Rupescissa

Richard Simon

Roman Forum

Revivification

Rubedo (Reddening)

Red and White tinctures

Rhases

Rava

Rudolf Clausius

Rhegium

Ramon Llull (Raymond)

Rubedo

Rabbi Elazar

Robert of Chester

Rav Yehuda

Reason (Logos)

Roman Triumph

Ramachandra

Rheticus

Regulus of Mars

Regimen of Health

Relation (Relatio)

Righteousness of faith

Roberto Salviati

Rule of Three (Trairāśika)

Riverbanks

Rational in power

Revelation

Reverberatory furnace

Representative Church

Regency

Robert Turner