Except that property taxes are an essential source of money for public schools.
They are an essential source of timely and reliable information for the public.
If this NATO is "an essential source of stability in an unpredictable world," heaven help us all.
The performers were from the Argento Chamber Ensemble, which, under the direction of Michel Galante, has become an essential source of adventurous new music in New York.
Ansari's reporting describes an essential source of failure in Pakistan's counterterrorism and counterinsurgency campaigns: even where there is the will, there is often not a way.
Second, postdoctoral appointments, which are generally filled by researchers who have recently earned Ph.D.'s, are an essential source of candidates for permanent positions.
And today, as its 28 leaders declared in Lisbon, "the alliance remains an essential source of stability in an unpredictable world".
"City AM has been a daily read for me since I came to London seven years ago and it's been an essential source of news and comment throughout my time at the Institute of Directors," May said.
For some, religion provides an essential source of guidance both about what constitutes wrongful conduct and the degree to which those who assist others in committing wrongful conduct themselves bear moral culpability".
"The revenue generated by the commercialization of the media and marketing rights associated with soccer constituted an essential source of revenue for the enterprise," the indictment said, referring to FIFA and its confederations.
In fact, Ms. Jacobson said, Ms. Buffet and Todd Simon put her in touch with Mr. Payne — whose work she had admired for years — and he became an essential source of support.
