Christianity was founded by people who could not have cared less about “Christian civilization.” What interested them was Christ, and the reverberations of his coming on the whole of human existence. Christians believed in Christ, not in Christianity itself; they were Christians, not “Christianists.”
Those few sentences articulate what is wrong with the West today - Christ is no longer at our centre. Without Him, everything will fall.
Related link: An interview with Rémi Brague ~ University of Chicago Press