On the Beryl (De Beryllo)
Cusa's 1458 treatise — the beryl as image of intellectual sight
Tradition: Late-medieval mysticism / Cusan philosophy
Cusa's 1458 treatise — the beryl as image of intellectual sight
De Beryllo ('On the Beryl,' 1458) is Nicholas of Cusa's (1401-1464) mature philosophical-mystical treatise using the beryl — a clear semi-precious crystal that medieval craftsmen ground into a lens or eyeglass — as the central image of intellectual-mystical sight. The conceit: just as the physical beryl allows the eye to see what it could not see unaided, so the speculative 'intellectual beryl' allows the mind to see what discursive ratio cannot reach — the coincidentia oppositorum, the unity of opposites in God, the way finite differentiated being relates to infinite Absolute Being. De Beryllo is a compact late-Cusan summary of his speculative metaphysics: the doctrine of learned ignorance (docta ignorantia, from De Docta Ignorantia 1440), the coincidence-of-opposites principle (which Hegel later credited Cusa with anticipating), the doctrine of God as the not-other (non-aliud), the contracted-and-absolute distinction, the participation-and-explication relation between God and creatures. Cusa moves through twelve theses or 'rules' for using the speculative beryl, each illustrated by examples from optics, mathematics, and Christian theology. The work positions Cusa between high-medieval scholastic-Aristotelian theology (Albert, Aquinas, Bonaventure) and Renaissance-modern speculative metaphysics (Ficino, Bruno, Boehme, Leibniz, German Idealism). The German nineteenth-twentieth-century recovery of Cusa (Cassirer, Blumenberg, Karsten Harries, Werner Beierwaltes) read Cusa as initiating the philosophical modernity that culminates in Leibniz, Schelling, and Hegel. De Beryllo remains an important Cusan philosophical-mystical text and is increasingly accessible in English through Jasper Hopkins's translations and through Hopkins's Cusa-corpus website.
Editions cited
- De Beryllo (Latin, 1458)
- Opera Omnia Nicolai Cusae (Heidelberg Academy edition, ongoing since 1932), vol. XI/1 ed. Hans Senger and Karl Bormann
- On the Beryl, trans. Jasper Hopkins, in Metaphysical Speculations (Hopkins, Banning Press, 1998)
- Selected Spiritual Writings, trans. H. Lawrence Bond (Paulist Press, Classics of Western Spirituality, 1997)
School Embodiments
Strong Neoplatonist framework.
"Neoplatonist intellectual-mystical philosophy." (De Beryllo)
Late-scholastic philosophical method.
"Late-scholastic philosophical-mystical method." (De Beryllo)
Catholic-theological framework.
"Catholic-theological framework." (De Beryllo)
Strong aesthetic-imagistic framework — beryl as central image.
"Aesthetic-mystical imagistic philosophy." (De Beryllo)
Christian-mystical tradition.
Internal Tensions
De Beryllo has remained an important Cusan philosophical-mystical text. German recovery of Cusa from Cassirer onward credited him with anticipating philosophical modernity — the coincidentia oppositorum read forward to Hegel's dialectic, the docta ignorantia read forward to Kantian critique, the non-aliud read forward to Schelling and Eckhart-Boehme mysticism. Cusa's late-medieval-to-early-modern hinge position remains contested between medievalist and modernist scholarship.
I. Time
1458 composition, late-Cusa, post-De-Docta-Ignorantia (1440) mature philosophical period.
Attributes
II. Space
Late-medieval Italian and German setting; Cusa as Cardinal-Bishop of Brixen, Roman ecclesiastical milieu.
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III. Matter
Intellectual-mystical sight, the coincidence-of-opposites, the God-creature relation, the speculative metaphysical structure of being.
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IV. Observer
Late Cusa as Cardinal-philosopher-mystic synthesising scholastic, Neoplatonic, and incipient-modern speculative elements.
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V. Energy
Speculative-mystical, optical-imagistic, metaphysical-systematic energies.
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VI. Information
Compact treatise structured as twelve theses or rules; optical-mathematical-theological examples; Latin scholastic-mystical prose.
Attributes
Personas with the nearest attribute fingerprint
Historical figures whose own classification on the same six-dimensional grid lands closest to this work's. Computed by attribute-agreement on coordinates both address.
Computed school proximity
The work's attribute fingerprint scored against all schools using the same quiz scorer. Useful as a sanity check on the hand-curated embodiments above.
How On the Beryl (De Beryllo) resolves each dilemma
51 resolved positions across 4 dimensions, including 6 distinctive where the majority of schools go the other way · 6 unaligned.
Each dimension is sorted so minority positions come first. Mainstream positions are folded into an expandable list.
Time · 9 dilemmas · 3 distinctive
Persistence, the future, and the direction of becoming.
6 mainstream positions
Matter · 7 dilemmas, all mainstream
Observer · 37 dilemmas · 3 distinctive
Mind, agency, and the knower's relation to the known.