Answer: The hammer, stirrup, and anvil are three tiny bones in your inner ear. They act as levers, to amplify the vibrations created by the ear drum. Ear drum oscillations are very weak, not strong enough to sufficiently move the liquid inside the cochlea. These three bones, also called ossicles are critical to hearing.
Answer: Who said "character is forged on the anvil of adversity."
I first heard this direct quote being attributed to Lance Hill during his tenure at the University of Delaware circa 1988-89. Not believing he coined it, I have since searched around a bit and never found anyone else formally credited with the quote. That said, there seem to be many references to the notion of character being forged through adversity, so it is likely a paraphrasing from some other text.