When thinking about religion, what is a secular age? Or what is the definition of a secular age?

In his book
A Secular Age, Charles Taylor writes,

One understanding of secularity then is in terms of public spaces. These have been
allegedly emptied of God, or of any reference to ultimate reality.  Or taken from another side,
as we function within various spheres of activityeconomic, political, cultural, educational,
professional, recreationalthe norms and principles we follow, the deliberations we engage in,
generally dont refer us to God or to any religious beliefs; the considerations we act on are
internal to the rationality of each spheremaximum gain within the economy, the greatest
benefit to the greatest number in the political area, and so on. 

In other words, Taylor states that a secular age is one in which a transition has been
made from finding it virtually impossible to not believe in God to one in which faith
in...

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