Full Idea
Kant's Critique swiftly brought rationalism to a halt, and after Kant empiricism has displayed a nervousness regarding its foundations, and been forced to assume more sophisticated forms.
Gist of Idea
Kant halted rationalism, and forced empiricists to worry about foundations
Source
Sebastian Gardner (Kant and the Critique of Pure Reason [1999], 10 Intro)
Book Reference
Gardner,Sebastian: 'Kant and the Critique of Pure Reason' [Routledge 1999], p.327
A Reaction
See the ideas of Laurence Bonjour for a modern revival of rationalism. After Kant philosophers either went existential, or stared gloomily into the obscure depths. Formal logic was seen as a possible rope ladder down.