Kant, What is Enlightenment
Thus we observe here as elsewhere in human affairs, in which almost everything is paradoxical, a surprising and unexpected course of events: a large degree of civic freedom appears to be of advantage to the intellectual freedom of the people, yet at the same time it establishes insurmountable barriers. A lesser degree of civic freedom, however, creates room to let that free spirit expand to the limits of its capacity.de Maistre
Everything that constrains a man, strengthens him.Kant, Public Reason, What is Enlightenment?
On the other hand, the private use of reason may frequently be narrowly restricted without especially hindering the progress of enlightenment. By "public use of one's reason" I mean that use which a man, as scholar, makes of it before the reading public. I call "private use" that use which a man makes of his reason in a civic post that has been entrusted to him. In some affairs affecting the interest of the community a certain [governmental] mechanism is necessary in which some members of the community remain passive. This creates an artificial unanimity which will serve the fulfillment of public objectives, or at least keep these objectives from being destroyed. Here arguing is not permitted: one must obey. Insofar as a part of this machine considers himself at the same time a member of a universal community--a world society of citizens-- (let us say that he thinks of himself as a scholar rationally addressing his public through his writings) he may indeed argue, and the affairs with which he is associated in part as a passive member will not suffer. Thus it would be very unfortunate if an officer on duty and under orders from his superiors should want to criticize the appropriateness or utility of his orders. He must obey. But as a scholar he could not rightfully be prevented from taking notice of the mistakes in the military service and from submitting his views to his public for its judgment. The citizen cannot refuse to pay the taxes levied upon him; indeed, impertinent censure of such taxes could be punished as a scandal that might cause general disobedience. Nevertheless, this man does not violate the duties of a citizen if, as a scholar, he publicly expresses his objections to the impropriety or possible injustice of such levies.Rawls, The Idea of Public Reason Revisited
The idea of public reason, as I understand it, belongs to a conception of a well ordered constitutional democratic society. The form and content of this reason -the way it is understood by citizens and how it interprets their political relationship- is part of the idea of democracy itself. This is because a basic feature of democracy is the fact of reasonable pluralism - the fact that a plurality of conflicting reasonable comprehensive doctrines, religious, philosophical, and moral, is the normal result of its culture of free institutions. Citizens realize that they cannot reach agreement or even approachmutual understanding on the basis of their irreconcilable comprehensive doctrines. In view of this, they need to consider what kinds of reasons they may reasonably give one another when fundamental political questions are at stake. I propose that in public reason comprehensive doctrines of truth or right be replaced by an idea of the politically reasonable addressed to citizens as citizens.The "politically reasonable" is not reason; it's situational and as such even its definition is political. Kant assumes forms of basic civility that Rawls spends volumes trying to nail down into a program. Most importantly Rawls focuses on conflicts among people and assumes a unanimity within the self. Kant describes the conflict in the mind of the soldier as citizen. He describes the divided consciousness of moral responsibility foundational to democracy. Following Kant, technocratic reason, as rule following, is private reason.
Panofsky, The History of Art as a Humanistic Discipline
Nine days before his death Immanuel Kant was visited by his physician. Old, ill and nearly blind, he rose from his chair and stood trembling with weakness and muttering unintelligible words. Finally his faithful companion realized that he would not sit down again until the visitor had taken a seat. This he did, and Kant then permitted himself to be helped to his chair and, after having regained some of his strength, said, ‘Das Gefühl für Humanität hat mich noch nicht verlassen’—’The sense of humanity has not yet left me’. The two men were moved almost to tears. For, though the word Humanität had come, in the eighteenth century, to mean little more than politeness and civility, it had, for Kant, a much deeper significance, which the circumstances of the moment served to emphasize: man’s proud and tragic consciousness of self-approved and self-imposed principles, contrasting with his utter subjection to illness, decay and all that implied in the word ‘mortality.’Kant was a humanist in the older, Renaissance (pre-Enlightenment), definition of the word.
My first reference to the essay (but not to Panofsky). etc. etc.