[@Aisling] "We've got some books on that, but vampirism itself isn't fully understood yet," Dracula said. "Those books mostly are about how to treat wounded vampires... but nobody knows, for example, why our wounds heal so fast or why we don't age. How our brains work without oxygen is still to be understood as well." 

"That should be enough," Toma said. "Although I'd recommend this one as a book for beginners." He pointed at a thick book on astronomy. "It explains everything, from how to navigate on the night sky over stars and planets to the Theory of Relativity."