The common good is defined in Pope John XXIII’s encyclical Mater et Magistra (On Christianity and Social Progress) as “the sum total of social conditions which allow people, either as groups or as individuals, to reach their fulfillment more fully and more easily.” I propose that the Basic Human Goods specify what ought to be pursued to attain the common good and what ought not be done because it detracts from the common good. If the no one ever acted in a way to impede a basic human good and would always so act as to promote some basic good, all that humans could do for the sake of the common good has been done. Unfortunately, factors beyond human control might always occur so that human life is wretched beyond any human effort.
So, I propose interpreting “basic human good” as “a constituent of the common good” or as “a common good.” So, the first law of morality “Do good, avoid evil!” can be read as ” Always promote a common good; never directly inhibit development of a common good.” Recreation or play is a basic good. So, one can be promoting a common good and hence the common good by “taking it easy” once and a while.
I offer an example of a common good brought about by human sexuality. Human sexuality, sexual practices, frequently brings about babies and somewhat less frequently a male bonded to the female who bore the child to help her and the child. Let us call this complex result “new life.” It is the new life of the infant, new life in the nuclear family, renewal of the life of the bonded mother and father and new life for continuance of the life of the community. Some but, but not all, and many, if only dimly, will recognize new life as a good in the common good. Hence, the gist of sexual morality is: Use sexuality to promote new life and never directly inhibit sexuality from leading to new life.
Much can be written about how we discover the common good. Here are a few observations on recognizing the common good. A common good is good for us; not necessarily good for me. It is communal. Nonetheless, since individuals are in communities common goods have to be good for individuals for the most part. There can be misperception of a common good if “us” refers to less than the whole human community. However, people understanding their community as less than the whole of humanity may very well recognize a common good in what is good for a narrower comunity to which they belong. Ethno-centricism accounts for misperception of a common good. However, ethno-centrism does not prevent correction perception of a common good. Perception of a common good does not require some impossible deracination program of thinking as a person who is simply human’ only in the community of humanity. Careful use of imagination and analogies suffice fairly well, I submit, for recognizing what people the world over care about. For instance, on the whole they don’t want their babies to die.