Well, you know what we have to contend against; but we, too, are not without strength. We have on our side power of combination – a power denied to the vampire kind; we have sources of science; we are free to act and think; and the hours of the day and the night are ours equally. In fact, so far as our powers extend, they are unfettered, and we are free to use them. We have self-devotion in a cause, and an end to achieve which is not a selfish one. These things are much.

– Bram Stoker

Dracula, Chapter 18. Scientist and vampire killer Abraham Van Helsing offers hope to his fellow Dracula hunters, promising that modern science gives them power and hope in their fight against the evil Count.