"We can be confident that action which is in accord with a few basic beliefs cannot be wrong and can at least testify to the values we will need to cultivate. These are the beliefs that the human race is a family that has inherited a place on the earth in common, that its members have an obligation to work toward sharing it so that none is deprived of the elementary needs for life, and that all have a responsibility to leave it undegraded for those who follow."