 He confessed that he expected his symbolism to be a grosses Hemmniss (great obstacle) standing in the way of the spread and impact of his ideas (Frege 1893: x). On the one hand, the exacting notation and absolutely rigorous and logically watertight proofs were essential to his logicist project. On the other hand, he feared, mathematicians would think metaphysica sunt, non leguntur! (it’s metaphysics, and is not [to be] read!), and philosophers would think mathematica sunt, non leguntur! (it’s mathematics, and is not [to be] read!); (Frege 1893: xii). Poor Frege might have been right. But the reason why the beef of his Grundgesetze was never properly digested can be read off the sandwiching. His foreword to Volume I ends with the confident words 