Enlightenment is man's leaving his self-caused immaturity. Immaturity is the incapacity to use one's intelligence without the guidance of another. Such immaturity is self-caused if it is not caused by lack of intelligence, but by lack of determination and courage to use one's intelligence without being guided by another. Sapere Aude! Have the courage to use your own intelligence! is therefore the motto of the enlightenment.
As refined fare serves a hungry man as well as and no better than coarser food, the more pretentious artist will not dream of inviting the hungry man to his meal.
Freedom is the alone unoriginated birthright of man, and belongs to him by force of his humanity; and is independence on the will and co-action of every other in so far as this consists with every other person's freedom.
And inasmuch as the great-souled man deserves most, he must be the best of men; for the better a man is the more he deserves, and he that is best deserves most. Therefore the truly great-souled man must be a good man. Indeed greatness in each of the virtues would seem to go with greatness of soul.
All the arts, which have a tendency to raise man in the scale of being, have a certain common band of union, and are connected, if I may be allowed to say so, by blood-relationship with one another.
I cannot often enough say, that a man is only a relative and representative nature. Each is a hint of the truth, but far enough from being that truth, which yet he quite newly and inevitably suggests to us. If I seek it in him, I shall not find it.