Indifference
From Conservapedia
Indifference is a lack of concern over something. Apathy is often expressed as indifference, and may be an effect of a mental disorder. It is also a theological term denoting a belief that differences in religious beliefs are essentially unimportant.
See also
References
The Danger of Indifference, by Michele Bauman (catholicnewsagency.com)
Encyclopedia of Mental Disorders: Apathy (minddisorders.com)
Catholic Encyclopedia: Religious Indifferentism (newadvent.org)