‘Men ought to know that from the brain, and from the brain alone, arise our pleasures, joys, laughter and jests, as well as our sorrows, pains, griefs and tears. Through it, in particular, we think, see, hear and distinguish the ugly from the beautiful, the bad from the good, the pleasant from the unpleasant… I hold that the brain is the most powerful organ of the human body… wherefore I assert that the brain is the interpreter of consciousness…’

(Hippocrates: On the sacred disease. Quoted by Prioreschi [1996])