What do you think an artist is? An imbecile who only has eyes, if he is a painter, or ears if he is a musician, or a lyre in every chamber of his heart if he is a poet, or even, if he is a boxer, just his muscles? Far from it: at the same time he is also a political being, constantly aware of the heartbreaking, passionate, or delightful things that happen in the world, shaping himself completely in their image. How could it be possible to feel no interest in other people, and with a cool indifference to detach yourself from the very life which they bring to you so abundantly? No, painting is not done to decorate apartments. It is an instrument of war.
– Pablo Picasso