The touchstone of everything that can be concluded as a law for a people lies in the question whether the people could have imposed such a law on its… - Immanuel Kant

"Have the courage to use your own reason- That is the motto of enlightenment.
"Foundations of the Metaphysics of
Morals" (1785)"

Now I say: man and generally any rational being exists as an end in himself, not merely as a means to be arbitrarily used by this or that will, but in all his actions, whether they concern himself or other rational beings, must always be regarded at the same time as an end.

[...] the understanding is capable of being instructed by and equipped with rules, the power of judgement is a special talent which cannot be taught, but can be practised. This is why power of judgement is the specific mark of our so-called native wit, the absence of which cannot be remedied by any schooling.