"Core truth" refers to the fundamental or essential truth of a matter. It represents the most important and central aspect of a belief, concept, or situation. Full definition
But, if dissent on core truths, then I dissent myself out of communion with the Faith. (nakedpastor.com)
She believes that shelters should tell more of the hard core truth. (animallawcoalition.com)
DeGeneres did manage to attract the layman's notice with her gimmicks but there exists nothing except core truth in whatever she said. (kryptomoney.com)