"'And now,' said he, 'to settle what remains. Will you be wise? will you be guided? will you suffer me to take this glass in my hand, and to go forth from your house without further parley? or has the greed of curiosity too much command of you? Think before you answer, for it shall be done as you decide. As you deside, you shall be left as you were before, and neither richer nor wiser, unless the sense of service rendered to a man in mortal distress may be counted as a kind of riches of the soul. Or, if you shall so prefer to choose, a new province of knowledge and new avenues to fame and power shall be laid open to you, here, in this room, upon the instant; and your sight shall be blasted by a prodigy to stagger the unbelief of Satan."

Robert Louis Stevenson, The Strange Case of Dr. Jekyll and Mr. Hyde