Sagacity and eloquence are linked together to such an extent that they cannot be torn asunder for any reason. - Philipp Melanchthon

It does not make such a difference whether you are simply mute or employ no art for speaking. For it is not feasible that you can express what you think as it should be understood unless you acquire and strengthen the ability to speak by art.

No one will be able to speak suitably and clearly about anything unless he has shaped his speech by some art, by imitation of the best.

Opto autem, ut sapientum Principum consilio, et autoritate aliquando, et ex aliarum gentium Ecclesiis, et nostris, pii et eruditi viri convocentur, ut de omnibus controversiis deliberetur, et una consentiens forma doctrinae vera et perspicua, sine ulla ambiguitate posteritati tradatur.