Intuitionism sacrificed large parts of mathematics in exchange for the soothing reassurance that what remained was justified by our ‘primordial intuition’ (Urintuition;. But intuition is subjective, and not intersubjective enough to prevent intuitionists form differing about what their ‘primordial intuitions’ should enshirine as the basis of mathematics.
(Kalmar, 1967, page 190).