Meillet completed his doctorate, "Research on the Use of the Genitive-Accusative in Old Slavonic", in 1897. In 1902, he took a chair in Armenian at the Institut national des langues et civilisations orientales and took under his wing Hrachia Adjarian, who would become the founder of modern Armenian dialectology. In 1905, he was elected to the Collège de France, where he taught on the history and structure of Indo-European languages. One of his most-quoted statements is that "anyone wishing to hear how Indo-Europeans spoke should come and listen to a Lithuanian peasant". He worked closely with linguists Paul Pelliot and Robert Gauthiot.