Noun
rule of reason (uncountable)
A doctrine in antitrust law which applies to contracts which "unreasonably" inhibit trade.
Good taste is either that which agrees with my taste or that which subjects itself to the rule of reason. From this we can see how useful it is to employ reason in seeking out the laws of taste. Georg Christoph Lichtenberg
Colonialism. The enforced spread of the rule of reason. But who is going to spread it among the colonizers? Anthony Burgess
The rule of reason is the true sovereign in the American system. Al Gore