What do you think an artist is An imbecile who has only his eyes if he is a painter, or his ears if he is a musician, or a lyre at every level of his heart if he is a poet, or, if he is merely a boxer, only his muscle On the contrary, he is at the same time a political being, constantly alert to the heartrending, burning, or happy events in the world, molding himself in their likeness.

Picasso's Concrete Sculptures (ed. 1982)