1. There are 20 eleven-letter words containing A, I, M, O, S and X: Amphioxuses AXIOMATISED AXIOMATISES TOXOPLASMIC XERODERMIAS XEROSTOMIAS

2. The logical formulation of pure mathematics suggested by Bertrand Russell in terms of a quantifier structure of propositions seemed more and more plausible, as large parts of mathematics became axiomatised and thus subject to the simple criteria of rigorous proof.