“…The remarkable enhancement of the local electromagnetic field achieved by plasmonic nanostructures is indeed a double-edged sword, as in pushing the sensitivity to the ultimate level, it strongly limits accuracy and reproducibility of the Raman data. …”

“…Seeds of Mobilization shows how socioeconomic development did not create a steady pressure toward democracy but acted as a "double-edged sword" that initially stabilized autocratic regimes before destabilizing them over time…”

“…There is Holofernes, the Assyrian conqueror, unable to defeat a small Israelite village after dozens of countries had fallen under his sword. Intent on seducing Judith, Holofernes instead lost his head to her. …”

“…Sensitive to the double-edged sword of knowledge and the idiocy of mankind, von Neumann's main legacy might be the deepening of the ancient dilemma of Prometheus. …”

“…But professionalization proved to be a double-edged sword. Better trained than their predecessors, women nevertheless had to fight to hold on to their status as the school system became more efficient, more structured, and more impersonal. …”
Sumario

“…Or as the authors of this book might say, when you're facing off against Heinous Demons of Insecurity, you need experienced companions, not to mention a Vorpal Sword of Security Knowledge." --Edward W. Felten, Ph.D. …”

“…On the Christian side, the small list of relics in Roland's sword is also carefully devised, not least in what is left out: a relic of the Lord; this is reserved for Charlemagne's Joiuse. …”

“…Not only are the medals thrown to the ground and the sword broken, but a life’s work passes review. At the close of his career, Freud returned to the environs of the wish, the cornerstone of his science. …”