'The Greeks were extremely, almost obsessively, interested in etymologies. ... its [this interest's] most celebrated, extended and lunatic efflorescence occurs in Plato's Cratylus'.
R. J. Hankison 'Usage and abusage: Galen on language', in Companions to Ancient Thought, 3: Language S. Everson (ed.). Cambridge University Press. 1994: 166-187, at 167.