“We are responsible not only for what we do but also for what we could have prevented.”

“Because learning does not consist only of knowing what we must or we can do, but also of knowing what we could do and perhaps should not do.”

“It is not only what we do, but also what we do not do, for which we are accountable.”

“I used to think that medicine and particularly surgery is just failed prevention. That if we could treat these people properly and, particularly, if we could do something about prevention, we could empty the hospital wards. It was probably false, but that's what I used to think.”

“We do not know what we want and yet we are responsible for what we are - that is the fact.”

“Not responding is a response - we are equally responsible for what we don't do.”

“The fact is that we don't want to be free. What is responsible for our problems is the fear of losing what we have and what we know.”

“[I]f suffering is bad for animals when we cause it, it is also bad for them when other animals cause it. That suffering is bad for those who experience it is not a human prejudice; nor is an effort to prevent wild animals from suffering a moralistic attempt to police the behavior of other animals. Even if we are not morally required to prevent suffering among animals in the wild for which we are not responsible, we do have a moral reason to prevent it, just as we have a general moral reason to prevent suffering among human beings that is independent both of the cause of the suffering and of our relation to the victims. The main constraint on the permissibility of acting on our reason to prevent suffering is that our action should not cause bad effects that would be worse than those we could prevent.”

“We have a Bill of Rights. What we need is a Bill of Responsibilities.”

“You are not only responsible for what you say, but also for what you do not say”