“Yet why should an artist's way of looking at the world have any meaning for us? Why does it give us pleasure? Because, I believe, it increases our awareness of our own potentiality. Not of course our awareness of our potentiality as artists ourselves. But a way of looking at the world implies a certain relationship with the world, and every relationship implies action. The kind of actions implied vary a great deal. … A work of art can, to some extent, increase an awareness of different potentialities in different people. The important point is that a valid work of art promises in some way or another the possibility of an increase, an improvement. Nor need the word be optimistic to achieve this; indeed, its subject may be tragic. For it is not the subject that makes the promise, it is the artist's way of viewing his subject. Goya's way of looking at a massacre amounts to the contention that we ought to be able to do without massacres.”

Source: Selected Essays of John Berger (2014), P. 18