This article provides somephilosophical ``groundwork'' for contemporary debatesabout the status of the idea(l) of critical thinking.The major part of the article consists of a discussionof three conceptions of ``criticality,'' viz., criticaldogmatism, transcendental critique (Karl-Otto Apel),and deconstruction (Jacques Derrida). It is shown thatthese conceptions not only differ in their answer tothe question what it is ``to be critical.'' They alsoprovide different justifications for critique andhence different answers to the question what giveseach of them the ``right'' to be critical. It is arguedthat (...) while transcendental critique is able to solvesome of the problems of the dogmatic approach tocriticality, deconstruction provides the most coherentand self-reflexive conception of critique. A crucialcharacteristic of the deconstructive style of critiqueis that this style is not motivated by the truth ofthe criterion (as in critical dogmatism) or by acertain conception of rationality (as intranscendental critique), but rather by a concern forjustice. It is suggested that this concern should becentral to any redescription of the idea(l) ofcritical thinking. (shrink)