Professors at Santa Clara University outline the basis for several different major approaches to ethics (i.e., the formal study of morality):

The first step in analyzing moral issues is obvious but not always easy: Get the facts. Some moral issues create controversies simply because we do not bother to check the facts. This first step, although obvious, is also among the most important and the most frequently overlooked.

But having the facts is not enough. Facts by themselves only tell us what is; they do not tell us what ought to be. In addition to getting the facts, resolving an ethical issue also requires an appeal to values. Philosophers have developed five different approaches to values to deal with moral issues.

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