Over against those who think that nothing can be considered true that cannot be perceived by the senses or mathematically proven, it is a towering certainty that by far the most and the most important things we know are based, not on proofs, but on immediate certainty.
Bavinck, Herman ; Bolt, John ; Vriend, John: Reformed Dogmatics, Volume 1: Prolegomena. Grand Rapids, MI : Baker Academic, 2003, S. 567
