Full Idea
In the seventeenth century only a certain type of logos was deemed legitimate, namely that identified with technical knowledge (or 'techné').
Clarification
'Logos' is the broad Greek concept of human reasoning
Gist of Idea
In the seventeenth century the only acceptable form of logos was technical knowledge
Source
David Roochnik (The Tragedy of Reason [1990], Intro. 15)
Book Reference
Roochnik,David: 'The Tragedy of Reason: the Platonic logos' [Routledge 1990], p.15