What is the crux of secularism? It is that belief in an underlying or moral equality of humans implies that there is a sphere in which each should be free to make his or her own decisions, a sphere of conscience and free action. that belief is summarised in the central value of classical liberalism: the commitment to ‘equal liberty’. Is this indifference or non-belief? Not at all. It rests on the firm belief that to be human means being a rational and moral agent, a free chooser with responsibility for one’s actions. It puts a premium on conscience rather than the ‘blind’ following of rules. It joins rights with duties to others.
This is also the central egalitarian moral insight of Christianity.The great socio-political gift of Christianity to the world.