Magna Carta was one of his principal tools.
"We have certainly utilized our principal tools, our most obvious conventional tools, anyway," Mr. Bernanke added.
The principal tools of the plasterer of that time were in design and purpose like those used today.
His principal tools are the acoustic guitar, the rock band, the digital sampler, chatter from the street and the radio and worldwide panic.
Duration and immersion are Mr. Rivette's principal tools, preconditions for the participatory trance state that often descends on viewers of his films.
His principal tools are the composing stick, a metal angle iron with one fixed end and a "knee" with a screw or lever for locking; the line gauge, a ruler graduated in units of typographic measurement; and tweezers.
For the first blocking out of a wood carving a sculptor may use saws and axes, but his principal tools are a wide range of wood-carver's gouges.
Cumbersome aspects there may have been, but the scissors, the slivers, the manila folders, the three-by-five cards, and the Underwood 5 were my principal tools until 1984, a year in which I was writing about a schoolteacher in Wyoming and quoting frequently from a journal she began in 1905.
Abramski, like the other opinions Kagan has written since arriving on the Court, in 2010, makes clear that she is armed not only with a dictionary but with what she identifies as one of the principal "tools of divining meaning": "common sense".
As in the cold war, the object is to avoid as many shooting battles as possible, and yet conservatives leave little doubt that they believe the principal tools in rooting out terrorism will always be military force abroad and relentless investigations at home.
This is doubly ironic, because even as NGOs contest the effects of globalization, they exhibit many of the characteristics of a global, transnational subculture; the Internet, moreover, is one of the principal tools that makes globalization feasible and organized protests against it possible.
