There is no ideology of the “center.” What is called a “centrist” or a “moderate” is actually very different — a bi-conceptual, someone who is conservative on some issues and progressive on others, in many, many possible combinations. Why does this matter? From the perspective of how the brain works, the distinction is crucial.
Because we think with our brains, all thought is physical. Our moral and political worldviews are realized as brain circuits with strong synapses. If you have two conflicting worldviews, you have two brain circuits that are mutually inhibitory, so that when one is activated, it is strengthened and the other is shut off and weakened. When a worldview applies to a given issue, there is a neural binding circuit linking the worldview circuit to that issue circuit in such a way that the issue is understood in terms of that worldview. The right language will activate that that issue as understood via that worldview. Using that language strengthens that worldview.
George Lakoff 