Complex sentence: Critics of postliberalism often have been concerned with its "post-foundational" aspects; debates have been centered on issues of incommensurability, sectarianism, fideism, relativism, truth and ontological reference.
Split into simpler sentences: Critics of postliberalism often have been concerned with its "post-foundational" aspects. Debates have been centered on issues of incommensurability, sectarianism, fideism, relativism, truth and ontological reference.