Maybe people become bitter when they don't know what they are fighting for. But I keep my eyes open.
If I had my way, I would have sex, drugs, and rock 'n' roll at least 4-6 hours a day. So long as there are going to be things in the way of that, we're going to have a revolution.
But if you're asking my opinion, I would argue that a social justice approach should be central to medicine and utilized to be central to public health. This could be very simple: the well should take care of the sick.

