Διαφωτισμός είναι η έξοδος του ανθρώπου από την ανωριμότητα για την οποία ο ίδιος ευθύνεται. - Immanuel Kant

From this it follows incontestably, that pure concepts of the understanding never admit of a transcendental, but only of an empirical use, and that the principles of the pure understanding can only be referred, as general conditions of a possible experience, to objects of the senses, never to things in themselves…

Act only according to that maxim by which you can at the same time will that it should become a universal law.

The mind intent upon resolving as well as compounding the concept of a composite demands and presumes boundaries in which it may acquiesce in the former as well as in the latter direction.