This quote is from C. G. Jung – “Relation of Analytical Psychology to Poetry”:
(the Portable Jung, p. 321)
“The impact of an archetype, whether it takes the form of immediate experience or is expressed through the spoken word, stirs us because it summons up a voice that is stronger than our own. Whoever speaks in primordial images speaks with a thousand voices, he enthralls and overpowers, while at the same time he lifts the idea he is seeking to express out of the occasional and the transitory into the realm of the ever enduring. He transmutes our personal destiny into the destiny of mankind, and voices in us all those beneficent forces that ever and anon have enabled humanity to find a refuge from every peril and to outlive the longest night.
That is the secret of great art, and of its effect upon us. The creative process, so far as we are able to follow it at all, consists in the unconscious activation of an archetypal image, and in elaborating and shaping this image into the finished work. By giving it shape, the artist translates it into the language of the present, and so makes it possible for us to find our way back to the deepest springs of life. Therein lies the social significance of art: it is constantly at work educating the spirit of the age, conjuring up the forms in which the age is most lacking. The unsatisfied yearning of the artist reaches back to the primordial image in the unconscious which is best fitted to compensate the inadequacy and one-sidedness of the present. The artist seizes on this image, and in raising it from deepest unconsciousness he brings it into relation with conscious values, thereby transforming it until it can be accepted by the minds of his contemporaries according to their powers.”