In fact people do not know enough about themselves and what is good for them to form a sufficiently definite conception of the general happiness (or whatever the end is) to establish definite rules for its pursuit.

As long as the Republican party exists in its present form, our nation cannot endure as a free society. Still worse, under their policies the human race is being rapidly propelled toward its extinction.

Kantian ethical theory distinguishes three levels: First, that of a fundamental principle (the categorical imperative, formulated in three main ways in Kant's Groundwork); second, a set of duties, not deduced from but derived from this principle, by way of its interpretation or specification, its application to the general conditions of human life - which Kant does in the Doctrine of virtue, the second main part of the Metaphysics of Morals; and then finally an act of judgment, through which these duties are applied to particular cases.

Hegel's theory of recognition is basically derived from Fichte, who is its real author.

Freedom is an unprovable but unavoidable presupposition, not an article of faith.

Not only our moral life, but even our use of theoretical reason - on which we rely in rationally inquiring into nature - presupposes that we are free.

It would be nice, wouldn't it? if we could get comfortable about the problem of freedom. Kant thinks that we can't.