Grammar, which knows how to control even kings. Act II, sc. vi. An apparent reference to Sigismund I, at the Council of Constance, 1414, said to a prelate who had objected to his Majesty's grammar, "Ego sum rex Romanus, et supra grammaticam" (I am the Roman emperor, and am above grammar).
Geometry is to the plastic arts what grammar is to the art of the writer.Les peintres cubistes (1913), reprinted in Oeuvres en prose complètes (Paris: Gallimard, 1991) vol. 2, p. 11; translation from Lionel Abel (trans.) The Cubist Painters (New York: Wittenborn, 1949) p. 13.