"central truth" is a correct and usable phrase in written English.
You can use it to refer to the most important or fundamental fact in a situation. For example, "The central truth that must be accepted is that our planet is in peril due to climate change."
Such messianism cannot obscure the central truth about Google Book Search: it is a business.
And the central truth that presides over the evening is death itself.
"The world is not Camelot," he said, as if summarizing some philosophy's central truth.
And therein lies the central truth of globalization today: We're all connected and nobody is in charge.
Indeed, about a third of the way through - in the seventh of the 23 chapters - we discover the central truth.
It remains a central truth on the presidential campaign trail that the United States is the land of opportunity, to which the world's huddled masses continue to flock.
But to repeat the central truth of modern criminology: building low barriers against violent crime has a disproportionate effect in ending it.
The categories sound silly, but they do get at a central truth, which is that there are many different kinds of independent voters.
And the most central truth of all is that independents and swing voters, terms you'll often hear used interchangeably on cable television, aren't really the same thing.
Behind the half absurd statement lies this central truth: there's no magic behind getting people on their feet or on their bikes, it just takes sufficient political will.
Dr Gary Slutkin, founder and head of Cure Violence, formerly known as Ceasefire, is one of the rare voices speaking out about this central truth.
