According to Frame, "Til's major complaints against competing apologetic methods are theological complaints, that is, that they compromise the incomprehensibility of God, total depravity, the clarity of natural revelation, God's comprehensive control over creation, and so on." Within their presuppositionalist framework, Van Tillians do often utilize foundational concepts for Thomistic and Evidentialist arguments (belief in the uniformity of natural causes, for example), but they are unwilling to grant that such beliefs are justifiable on "natural" (neutral) grounds. Rather, Van Tillians employ these beliefs, which they justify on Biblical grounds, in the service of "transcendental arguments", which are a sort of meta-argument about foundational principles, necessary preconditions, in which the non-Christian's worldview is shown to be incoherent in and of itself and intelligible only because it borrows capital from the Christian worldview. For example, where evidentialists would take the uniformity of natural causes in a closed system as a neutral common starting point and construct a cosmological argument for an unmoved mover, Van Tillian presuppositionalists would ask for a justification for the belief in the uniformity of natural causes in a closed system, given the worldview of the opponent, attempting to show that such a belief presupposes the Christian worldview and is ultimately incompatible with the opposing worldview. Van Til summarized the main drive of his apologetic by saying: "the only proof for the existence of God is that without God you couldn't prove anything."