Full Idea
Consistency is the cornerstone of rationality.
Gist of Idea
Consistency is the cornerstone of rationality
Source
J Baggini / PS Fosl (The Philosopher's Toolkit [2003], §1.06)
Book Reference
Baggini,J and Fosl,P.S.: 'The Philosopher's Toolkit' [Blackwells 2003], p.17
A Reaction
This is right, and is a cornerstone of Kant's approach to ethics. Rational beings must follow principles - in order to be consistent in their behaviour. 'Consistent' now requires a definition….