Eachard on Plain Language

As if plain words, useful and intelligible instructions, were not as good for an esquire, or one that is in commission from the King, as for him that holds the plough.

John Eachard, 1670. Some Observations Upon
the Answer to an Enquiry into
the Grounds and Occasions
of the Contempt of the Clergy.

Cicero on Human Language

The one point in which we have our very greatest advantage over the brute creation is that we hold converse with one another, and can reproduce our thought in word.

Cicero