This quinta essentia had been speculated upon by the Greeks, some regarding it as immaterial or aethereal, andothers as material; and a school of philosophers termed alchemists arose who attempted the isolation of this essence.
We Su have seen that the science took its origin in the arts practised by the Egyptians, and, having come under the influence of philosophers, it chose for its purpose the isolation of the quinta essentia, and subsequently the " art of making gold and silver."
146), " beyond which the intellect cannot rise, called by the Greeks obvia, by the Latins essentia.
Ravaisson-Mollien has discovered a number of fragments by him, among which the most important is the De Essentia Dei et de Substantia Dei; a Liber Sententiarum, consisting of discussions on ethics and Scriptural interpretation, is also ascribed to Champeaux.
The fundamental principles of his system (see Scholasticism) are that "Essentia non sunt multiplicanda praeter necessitatem" ("Occam's Razor"), that nouns, like algebraical symbols, are merely denotative terms whose meaning is conventionally agreed upon (suppositio), and that the destructive effect of these principles in theological matters does not in any way destroy faith (see the Centilogium Theologicum, Lyons, 1495, and Tractatus de Sacramento Altaris).
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