Full Idea
Why didn't he start 'Truth' off by saying "A pig is the measure of all things", or "a baboon",…or " tadpole"? That would have been a magnificently haughty beginning.
Gist of Idea
Why didn't Protagoras begin by saying "a tadpole is the measure of all things"?
Source
comment on Jaegwon Kim (Mind in a Physical World [1998], B01) by Plato - Theaetetus 161d1
Book Reference
'The First Philosophers', ed/tr. Waterfield,Robin [OUP 2000], p.215