Nikola Tesla was talking about his student days at Prague.
“I remember well at Prague,” he said, “an old professor of great originality and acumen. This professor insisted on the value of a free use of the perceptive faculties, and he was always pointing out the need for this use in strange ways.
“One day, on arising to lecture, he began: ‘Gentlemen, you do not use your faculties of observation as you should.’
“He laid on the table before him a pot, filled with some vile-smelling chemical compound – a thick, brown stuff.
“’When I was a student,’ he went on, ‘I did not fear to use my sense of taste.’
“He dipped his finger deep into the pot and then stuck the finger in his mouth.
“’Taste it, gentlemen. Taste it,’ he said, smiling grimly.
“The evil pot passed round the class, and one after another we dipped our fingers in it and then sucked them clean. The taste of the thick brown compound was horrible. We made wry faces and spluttered. The professor watched us with a grim smile.
“When the pot was finally returned to him, his thin lips parted, and he gave a dry chuckle.
“’I must repeat gentlemen.’ he said, ‘that you do not use your faculties of observation. If you had looked more closely at me you would have observed that the finger I put in my mouth was not the one I dipped into the pot.’”
New-York Tribune, 27 Nov 1904, pg 11-12
"I would like to talk with you, my dear sir," he said, "but I feel far from well to-day. I am completely worn out, in fact, and yet I cannot stop my work. These experiments of mine are so important, so beautiful, so fascinating, that I can hardly tear myself away from them to eat, and when I try to sleep I think about them constantly. I expect I shall go on until I break down altogether."
Nikola Tesla speaking to Walter T Stephenson for the article, Nikola Tesla and the Electric Light of the Future published in The Outlook 9 March 1895.
Dr Herbert West advises his hapless assistant, Andrew Snidge, that he must take drastic steps to retrieve his undead creation.
Dr West: After what happened last time, well, I swore I would never create another army of the undead.
Andrew: Why?! What… what happened last time?
Dr West: Do you remember when I taught you that if you aren’t constantly in danger of obliterating everything you know, you aren’t really doing science?
Dr West: I was really doing science.
"The pen is mightier than the sword", as explained by Dr Herbert West in Our Fair City.
It means that while your opponent makes a sword, you could be using your pen to design a formula to reanimate flesh-hungry corpses to EAT your opponent… and possibly his sword, as well.