In modern democracies, the most controversial topic is drawing the line that separates religion from secularism.
Meaning, that after the French Enlightenment, philosophers and jurists have been working together on creating a juridical system that necessarily is autonomous and independent from religious influence: that's what secularism is all about. But: does secular law rely on morality?. Yes, it does. On secular morality, and its sources are:
- jus naturale (natural law), that is what a society and a community naturally considers good and rightful, and so therefore, moral. For instance, marriage is a juridical institution that basically relies on natural law. The attraction between two people who want to commit before the State.
- bioethics, that is what secular philosophy considers ethical, in medicine and science. The most controversial topic that involves bioethics is abortion.
- common sense; all that involves logic and equity. Compromise between individuals' rights and common good or general welfare. In several constitutions it is called "good customs".
- international law. The fundamental human rights of the person, that rely on philosophical principles and not on religion. Let's give an example about how these two kinds of morality greatly differ.
The topic of adultery. According to secular morality, it is not considered immoral because it deals with sexual relations between two consenting adults. According to religious morality, it is considered a sin.