Aaron ben Moses ben Asher was the first to take Hebrew grammar seriously. He was the first systematic Hebrew grammarian. His "Sefer Dikdukei ha-Te'amim" ("Grammar or Analysis of the Accents") was an original collection of grammatical rules and masoretic information. Grammatical principles were not at that time considered worthy of independent study. The value of this work is that the grammatical rules presented by ben Asher reveal the linguistic background of vocalization for the first time. He had a tremendous influence on subsequent Biblical grammar and scholarship.