I cannot repeat too often that all words of the Hebraic tongue are formed in such a way as to contain within themselves the reason of their formation. Let us consider the word אור light: it is derived directly from the word אור fire. The only difference between them is, that in the word which designates fire, it is the universal convertible sign ו which forms the link between the sign of power א, and that of movement proper ר: whereas in the second it is the intelligible sign וֹ. Let us proceed further. If, from the words אור and אוֹר , one takes away the median sign ו or וֹ there will remain the elementary root אר composed of power and movement, which in all known tongues signifies by turns, earth, water, air, fire, ether, light, according to the sign joined thereunto. (The Hebraic Tongue Restored, Fabré d’Olivet, p. 33)