If we reject the Bible's teaching on the subject of sin, how can we possibly determine who is good and who is not with any degree of objectivity and fairness? Many people, in this post modern age of relative truth and morality, say that we don't need to make such judgments. That is why you may hear a thousand different answers to the question: 'what is the measure of a good man?"
Let me clear here. When I speak of judging the goodness and badness of people, I am in fact saying that we should not do that because we are not qualified. On the basis that we are all bad, we are not equipped to judge people. We can however make honest assessments of ourselves which should allow us to be more forgiving of others and gracious to them.
I suggest there is one answer. The Biblical measure of a man's goodness, remembering that when compared with God our own righteousness is like filthy rags, can be assessed by how he relates to three distinct groups of people; friends, strangers and enemies.
As for the first group, friends are friends because, among other things, they treat each other well, have common interests, help each other and show loyalty. It's easy to be "good" to your friends, and by being "good" to them, it is easy for them to reciprocate. It's easy to love your friends, but as Jesus said, "If you love those who love you, what credit is that to you?" (Luke 6:32)