This category included atheists, agnostics, humanists, and others with no theistic religious beliefs or practices.

Plantinga (2000a) would later argue that theistic belief has "warrant".

It is irrational or unacceptable to accept theistic belief without sufficient or appropriate evidence or reason.

There is not sufficient/appropriate evidence or reason for theistic belief.

Implicit atheism is defined by Smith as "the absence of theistic belief without a conscious rejection of it".

"Absence of theistic belief" encompasses all forms of non-belief in deities.

Explicit atheism - "the absence of theistic belief due to a conscious rejection of it".

Implicit atheism - "the absence of theistic belief without a conscious rejection of it".

Theological issues became his main interest, with a concern for traditional theistic belief lasting throughout his life and writings.

The first is the refusal by militant atheists to admit that there is a rational basis for theistic belief.