This is more of a description than an ethic. This can be related to the Milgram experiment, it just so happens to be the way most people behave. Practical Imperative Treat persons as ends not as means. This was also by Kant. It states that you can use a machine or animal to get what you want, but don't use a person to achieve your goal.
First principle is to maximize individual freedom consistent with similar freedoms for all.
Proportionality Ethic Weigh the positive and negative implications of any ethical decision. This is a Catholic Theology that says you must weigh the positive against the negative. Rights Ethic Rights imply duties, in other words as a result of others having rights, you have obligations to see that those rights are met. This is the basis of most Western Constitutions, for example the Declaration of Independence. Theory of Justice Most important new philosophical theory of the twentieth century.