Quintessence
<p>Quintessence is the <a href="https://en.wikipedia.org/wiki/Latinate" class="mw-redirect" title="Latinate">Latinate</a> name of the fifth element used by medieval alchemists for a medium similar or identical to that thought to make up the heavenly bodies. It was noted that there was very little presence of quintessence within the terrestrial sphere. Due to the low presence of quintessence, earth could be affected by what takes place within the heavenly bodies.<sup id="cite_ref-TheAlchemists_12-0" class="reference"><a href="https://en.wikipedia.org/wiki/Aether%28classical_element%29#cite_note-TheAlchemists-12">[12]</a></sup> This theory was developed in the 14th century text <i>The testament of Lullius</i>, attributed to <a href="https://en.wikipedia.org/wiki/Ramon_Llull" title="Ramon Llull">Ramon Llull</a>. The use of quintessence became popular within medieval alchemy. Quintessence stemmed from the medieval elemental system, which consisted of the four classical elements, and aether, or quintessence, in addition to two chemical elements representing metals: <a href="https://en.wikipedia.org/wiki/Sulphur" class="mw-redirect" title="Sulphur">sulphur</a>, "the stone which burns", which characterized the principle of combustibility, and <a href="https://en.wikipedia.org/wiki/Mercury%28element%29" title="Mercury (element)">mercury</a>, which contained the idealized principle of metallic properties.
This elemental system spread rapidly throughout all of Europe and became popular with alchemists, especially in medicinal alchemy. Medicinal alchemy then sought to isolate quintessence and incorporate it within medicine and elixirs.<sup id="cite_ref-TheAlchemists_12-1" class="reference"><a href="https://en.wikipedia.org/wiki/Aether%28classical_element%29#cite_note-TheAlchemists-12">[12]</a></sup> Due to quintessence's pure and heavenly quality, it was thought that through consumption one may rid oneself of any impurities or illnesses. In <i>The book of Quintessence</i>, a 15th-century English translation of a continental text, quintessence was used as a medicine for many of man's illnesses. A process given for the creation of quintessence is <a href="https://en.wikipedia.org/wiki/Distillation" title="Distillation">distillation</a> of alcohol seven times.<sup id="cite_ref-13" class="reference"><a href="https://en.wikipedia.org/wiki/Aether%28classical_element%29#cite_note-13">[13]</a></sup> Over the years, the term quintessence has become synonymous with <a href="https://en.wikipedia.org/wiki/Elixirs" class="mw-redirect" title="Elixirs">elixirs</a>, medicinal <a href="https://en.wikipedia.org/wiki/Alchemy" title="Alchemy">alchemy</a>, and the <a href="https://en.wikipedia.org/wiki/Philosopher%27s_stone" title="Philosopher's stone">philosopher's stone</a> itself.<sup id="cite_ref-14" class="reference"><a href="https://en.wikipedia.org/wiki/Aether_%28classical_element%29#cite_note-14">[14]</a></sup></p>