Dhammapada · 19.3

Na tena paṇḍito hoti, yāvatā bahu bhāsati;Khemī averī abhayo, paṇḍitoti pavuccati.

Na tena pandito hoti, yavata bahu bhasati; Khemi averi abhayo, panditoti pavuccati.

One does not become wise merely by talking much. The one who is peaceful, free from hatred, and fearless — that person is called wise.

— Dhammapada 19.3

Source: Pali text from the Khuddaka Nikāya of the Pali Canon (oldest extant Buddhist scripture, compiled c. 3rd century BCE). Public-domain English readings drawn from F. Max Müller's translation in Sacred Books of the East, Vol X (1881) and the Buddhist Publication Society's freely-licensed Acharya Buddharakkhita rendering.