1. Etymology and Definitions

Secular and secularity derive from the Latin word saeculum which meant "of a generation, belonging to an age" or denoted a period of about one hundred years.^[1] In the ancient world, saeculum was not defined in contrast to any sacred concerns and had a freestanding usage in Latin.^[2] It was in Christian Latin of medieval times, that saeculum was used for distinguishing this temporal age of the world from the eternal realm of God.^[1] The Christian doctrine that God exists outside time led medieval Western culture to use secular to indicate separation from specifically religious affairs and involvement in temporal ones.

This does not necessarily imply hostility to God or religion, though some use the term this way (see "secularism", below); Martin Luther used to speak of "secular work" as a vocation from God for most Christians. According to cultural anthropologists such as Jack David Eller, secularity is best understood, not as being "anti-religious", but as being "religiously neutral" since many activities in religious bodies are secular themselves and most versions of secularity do not lead to irreligiosity.^[3]

2. Secularization

According to the anthropologist Jack David Eller's review of secularity, he observes that secularization is very diverse and can vary by degree and kind. He notes the sociologist Peter Glasner's ten institutional, normative, or cognitive processes for secularization as:^[4]

• Decline – the reduction in quantitative measures of religious identification and participation, such as lower church attendance/membership or decreased profession of belief
• Routinization – "settling" or institutionalizing through integration into the society and often compromise with the society, which tends to occur when the religion becomes large and is therefore one mark of success as a religion, although it is less intense and distinct than in its early formative "cultish" or new-religious-movement stage
• Differentiation – a redefined place or relation to society, perhaps accepting its status as one religion in a plural religious field or morphing into a more "generic" and therefore mass-appeal religion.
• Disengagement – the detachment of certain facets of social life from religion
• Transformation – change over time (Glasner cites [Max] Weber's analysis of Protestantism as a transformation of Christianity for a new social milieu)
• Generalization – a particular kind of change in which it becomes less specific, more abstract, and therefore more inclusive, like the supposed "civil religion" in the United States; it moderates its more controversial and potentially divisive claims and practices
• Desacralization – the evacuation of "supernatural" beings and forces from the material world, leaving culture and rationality to guide humans instead
• Segmentation – the development of specialized religious institutions, which take their place beside other specialized social institutions
• Secularization – the processes of urbanization, industrialization, rationalization, bureaucratization, and cultural/religious pluralism through which society moves away from the "sacred" and toward the "profane"
• Secularism – the only form that leads to outright rejection of religion, amounting to atheism

3. Modern Usage

Examples of secular used in this way include:

• Secular authority, which involves legal, police, and military authority, as distinct from clerical authority, or matters under church control.
• Secular clergy in the Roman Catholic Church, who, traditionally, do not live the monastic lives of the regular clergy and are therefore, in a sense, more engaged with the temporal world. For a related Roman Catholic reference, see secular institute.
• Secular education, schools that are not run by churches, mosques, or other religious organizations.
• Secular states with secular governments that follow civil laws—as distinct from religious authorities like the Islamic Sharia, Catholic Canon law, or Jewish Halakha—and that do not favour or disfavour any particular religion.
• Secular Jewish culture, cultural manifestations of Jewishness that are not specifically religious.
• Secular music, composed for general use, as distinct from sacred music which is composed for church use. Secular sonatas, in the 17th century, were those not composed for church services.
• Secular Organizations for Sobriety, a secular alternative to the Alcoholics Anonymous (AA) organization which is a loosely religious one although nondenominational.
• Secular society refers to aspects of society that are not mosque-, church-, synagogue-, or temple-affiliated.
• Secular spirituality, the pursuit of spirituality without a formal affiliation with a church, or other religious organization, or the pursuit of spirituality specifically in the context of temporal affairs.
• Secular peers, in reference to the Peers of the House of Lords that are not connected to the Church.
• Secular humanism

4. Related Concepts

A laïcité parade in Beirut Central District, Lebanon (see Secularism in Lebanon). https://handwiki.org/wiki/index.php?curid=1342795

• Secularism is an assertion or belief that religious issues should not be the basis of politics, and it is a movement that promotes those ideas (or an ideology) which hold that religion has no place in public life. French frequently uses laïcité as an equivalent idiom for sécularisme. Secularist organizations are distinguished from merely secular ones by their political advocacy of such positions.
• Laïcisme is the French word that most resembles secularism, especially in the latter's extreme definition, as it is understood by the Catholic Church, which sets laïcisme in opposition to the allegedly far milder concept of laïcité. The correspondent word laicism (also spelled laïcism) is sometimes used in English as a synonym for secularism.
• Laïcité is a French concept related to the separation of state and religion, sometimes rendered by the English cognate neologism laicity and also translated by the words secularity and secularization. The word laïcité is sometimes characterized as having no exact English equivalent; it is similar to the more moderate definition of secularism, but is not as ambiguous as that word.

5. Education

All of the state universities in the United States are secular organizations (especially because of the combined effect of the First and Fourteenth Amendments to the United States Constitution) while some private universities are connected with the Christian or Jewish religions such as Boston College, Emory University, the University of Notre Dame, Wheaton College and Yeshiva College. Other universities started as being religiously affiliated but have become more secular as time went on such as Harvard University and Yale University. The public university systems of the United Kingdom , Australia , New Zealand, Canada , Colombia, India , and Japan are also secular, although some government-funded primary and secondary schools may be religiously aligned in some countries. Exactly what is meant by religious affiliation is a complex and contested issue since the ways in which religious identity is framed is not consistent across different religious and cultural traditions.^[5]