Question 384.b: Blow ups

X named en element Y which is prominently in use today, as it was amongst all alchemists eons ago. It was named as thus because of the shape of its crystals (they were pointed). A way if you will, to pull wool over everyone else's eyes about their craft.

X is the father of a branch of science, for which he was noted as saying in German: Alle Ding' sind Gift, und nichts ohn' Gift; allein die Dosis macht, daß ein Ding kein Gift ist.
("All things are poison and nothing is without poison, only the dose permits something not to be poisonous.")

He is ore famously known for his style of speaking and writing, akin to the excess clothing or padding of Shakespearian times. For eg

"I am Theophrastus, and greater than those to whom you liken me; I am Theophrastus, and in addition I am monarcha medicorum and I can prove to you what you cannot prove...I need not don a coat of mail or a buckler against you, for you are not learned or experienced enough to refute even a word of mine...As for you, you can defend your kingdom with belly-crawling and flattery. How long do you think this will last?...Let me tell you this: every little hair on my neck knows more than you and all your scribes, and my shoe buckles are more learned than your Galen and Avicenna, and my beard has more experience than all your high colleges."

This lead to the origin of a term the OXford English dictionary claims isn't a play upon X.

ID X , Y and the term

(ps: for all tin eyers, here's a photo)