The picture of Kant as the 'theological Robespierre' or the "world-crusher" was first suggested by someone with whom Kant stood in a relation of philosophical disagreement but also great mutual respect: namely, Moses Mendelssohn.

I think the term "Kantian constructivism" as an oxymoron. Kant was a constructivist about mathematics, but not about ethics.

It is a culturally interesting (but also deeply depressing) fact that many religious claims seem to retain their emotional power for believers only if taken in ways that are intellectually unsupportable and even morally contemptible.

Kant's aim was to develop a religion within the boundaries of mere reason (that is, reason unaided by special empirical revelation) and then to ask about existing ecclesiastical faith (especially about Christianity, and the Lutheran Christianity of his time and place) how this revealed faith must be interpreted if it is to be reconciled with reason, and even seen as a wider (though morally optional) extension of a religion of reason.

Kant does represents a distinctively modern view of the human condition in contrast to that of ancient high culture, found in ancient Greek ethics and also in ancient Chinese ethics.

We are generally forced to choose one way or the other of distancing ourselves from Kant. I suppose I tend to choose the irreligious way. But I regret that Kant's path has not been followed.

We can never prove that we are free or integrate our freedom in any way into our objective conception of the causal order of nature.