He had a great reputation as an orator, and is characterized by Ennius as "the quintessence of persuasiveness" (suadae medulla).
But that suggestion is the central idea of the Origin of Species, and contains the quintessence of Darwinism."
Aristotle could not know enough, physically, about Nature to understand its matter, or its motions, or its forces; and consequently he fell into the error of supposing a primary matter with four contrary primary qualities, hot and cold, dry and moist, forming by their combinations four simple bodies, earth, water, air and fire, with natural rectilineal motions to or from the centre of the earth; to which he added a quintessence of ether composing the stars, with a natural circular motion round the earth.
And indeed, Gandalf is almost the quintessence of wizard-dom.
The ultimate triumph of the good spirit is an ethical demand of the religious consciousness and the quintessence of Zoroaster's religion.