Does Alston's argument in "Perceiving God" succeed in treating religious experience as a perceptual mode parallel to sensory perception, or does it face decisive epistemological objections?

William Alston's argument in "Perceiving God" (1991) represents one of the most important contemporary attempts to establish epistemological legitimacy for religious experience. Alston, one of the leading analytic philosophers of religion, develops a sophisticated theory: religious experience constitutes a "doxastic practice" parallel to sensory perception, with its own independent epistemological legitimacy. The argument is influential but faces strong objections from philosophers like Richard Gale and Evan Fales.

Inadequate Responses to Avoid

From some defenders of religious experience:

"Religious experience is conclusive proof of God's existence." This goes beyond what Alston himself claims. Alston is precise: his argument defends "prima facie justification" for religious experience, not conclusive proof. The claim that experience "proves" God's existence weakens the sophisticated philosophical position.

"Anyone who denies religious experience has never had one." This is both a logical and empirical error. Many former believers had powerful religious experiences and later interpreted them naturalistically. Epistemological criticism of experience does not require denying its occurrence.

"The parallel with sensory perception is perfectly clear." This is a damaging oversimplification. Alston develops the parallel over 400 pages of careful analysis. Claiming the parallel is "obvious" misses the epistemological complexities the book addresses.

From some critics:

"Religious experience is merely psychological projection." This is hasty reductionism. Even if experience has a psychological dimension, this does not negate the possibility of a genuine epistemological dimension. Sensory perception also has psychological dimensions without losing its epistemological value.

"Contradiction between different religious experiences invalidates them all." This is a logical leap. Contradiction poses a challenge, but does not necessarily entail the invalidity of all experiences. Alston addresses this objection in detail: contradiction may mean some experiences are more accurate than others, not that all are false.

"Sensory perception is objective while religious experience is subjective." This oversimplifies the distinction. Sensory perception has subjective aspects (colors and sounds differ between individuals), and religious experience may contain objective aspects (convergence in descriptions across cultures). The distinction is more complex than it appears.

Why These Responses Are Inadequate

They fail to recognize that Alston presents a sophisticated epistemological theory grounded in contemporary philosophy of perception, not merely an emotional defense of religious experience. Serious criticism requires engaging with the details of the epistemological structure.

Structure of Alston's Argument

The argument in "Perceiving God" develops through sequential steps:

Step One: Doxastic Practices

Alston begins by analyzing how we justify our ordinary perceptual beliefs. Sensory perception constitutes a "doxastic practice"—a social mechanism for generating and evaluating beliefs. This practice:

- Has internal criteria for distinguishing correct from incorrect perception
- Is socially embedded across generations
- Cannot be justified circularly (we cannot prove the reliability of senses with senses)
- Is practically accepted despite the impossibility of ultimate justification

Step Two: Christian Mystical Practice (CMP)

Alston analyzes "Christian Mystical Practice" as a parallel doxastic practice:

- Has a long history of experienced practitioners
- Has internal criteria for discrimination (conformity with Scripture, fruits of the Spirit, etc.)
- Produces beliefs about God based on direct experiences
- Cannot be justified from outside itself (exactly like sensory perception)

Step Three: The Principle of Epistemic Innocence

If a doxastic practice is:
- Socially established
- Produces internally coherent beliefs
- Has self-corrective mechanisms
- Faces no decisive objections

Then it is "practically rational" to rely on it, even without ultimate proof of its accuracy.

Step Four: Application to CMP

Alston argues that CMP meets these conditions:
- Established over centuries (from Desert Fathers to Teresa of Avila to contemporaries)
- Produces coherent beliefs about God's nature and relationship with humans
- Has criteria for discrimination (humility, love, doctrinal conformity)
- Objections against it are no stronger than objections against sensory perception

Richard Gale's Objections

Richard Gale in "On the Nature and Existence of God" (1991) and "Mysticism and Philosophy" (2002) presents the strongest systematic criticism of Alston:

First Objection: Lack of Symmetry in Checking Mechanisms

Sensory perception has independent checking mechanisms:
- Vision can be checked by touch
- Perceptions of different people can be compared
- Objective measuring instruments can be used

Religious experience lacks these mechanisms. There is no other "religious sense" for verification, nor objective instruments for measuring divine experience.

Second Objection: Prediction and Control

Sensory perception enables prediction and environmental control. If you see a wall, you can predict collision if you continue walking. Religious experience offers no comparable predictive capacity about "divine behavior."

Third Objection: Contradiction Between Traditions

Different religious traditions produce contradictory experiences:
- Christians experience the personal Trinitarian God
- Advaitic Hindus experience impersonal Brahman
- Buddhists experience śūnyatā (emptiness)

This contradiction runs deeper than cross-cultural differences in sensory perception.

Alston's Responses to Gale

Alston develops sophisticated responses in the book's final chapters and later articles:

To the First Objection:

Cross-checking mechanisms are not a requirement for epistemological legitimacy. Even in sensory perception, some experiences (like pain) cannot be cross-checked. Moreover, CMP has internal checking mechanisms: conformity with Scripture, confirmation from spiritual directors, moral fruits of experience.

To the Second Objection:

Predictive capacity is not the sole criterion of epistemological legitimacy. Many of our justified beliefs (historical, moral, aesthetic) offer no predictions. Religious experience may also provide a kind of "spiritual prediction" (expecting inner peace from prayer, for example).

To the Third Objection:

Contradiction between traditions is a real problem, but does not invalidate all. It could be that:
- Some traditions are closer to truth than others
- Different experiences reveal different aspects of divine truth
- The theological interpretations of experience are contradictory, not the raw experience

Evan Fales' Objections

Evan Fales in "The Cognitive Science of Religion" (2007) presents an objection from the angle of cognitive science:

Religious experience can be fully explained by neural and psychological mechanisms:
- Temporal lobe activation produces experiences of "presence"
- Altered states of consciousness produce experiences of "unity"
- Psychological attribution mechanisms explain "interpretation" of experiences as divine

If naturalistic explanation suffices, there is no need to assume metaphysical reality behind experience.

Possible Alstonian Response

Neural explanation does not negate epistemological accuracy. Sensory perception also has a complete neural basis, but this does not make it "mere neural illusions." The question is not "Does experience have a neural basis?" but "Does the neural basis convey genuine information about reality?"

Contemporary Currents (2018-2026)

The "Reformed Defense of Alston" Current

Including Keith Yandell, Jerome Gellman, and Kai-man Kwan. They develop Alston's arguments with new tools:
- Integration of positive psychology research on spiritual experiences
- Bayesian analysis of the epistemological value of religious experience
- Cross-cultural studies of common elements in experiences

The "Reformed Epistemological Criticism" Current

Including Matthew Ratcliffe, Philip Webb, and Helen De Cruz. They develop new objections:
- Religious experience lacks the "phenomenological transparency" of sensory perception
- Cognitive mechanisms producing religious experience are evolutionarily unreliable
- Cultural-linguistic dimensions shape experience more than acknowledged

Where We Stand in This Debate Today

The debate over Alston's argument remains active in analytic philosophy of religion (2020-2026). Among the most prominent developments: deepening Bayesian analysis of religious experience by philosophers like Jonathan Kvanvig and Luke Philips, reframing the question from "Is religious experience justified?" to "How much confirmation does it add to the theistic hypothesis?" A current has also emerged integrating cognitive neuroscience with reformed epistemology, accepting that religious experience has neural foundations without reducing it to them. In contrast, critics like Helen De Cruz and Alex Malpass have developed objections from the angle of cognitive diversity: the multiplicity of contradictory religious doxastic practices weakens the legitimacy of any without independent external evidence. The prevailing tendency today neither rejects Alston's argument wholesale nor accepts it without reservations, but treats it as contributing to a broader cumulative case rather than as a standalone argument.

From the Angle of Rational Presumption (rajḥān ʿaqlī)

When read within the method of cumulative rational presumption, Alston's argument is neither treated as independent proof of God's existence nor rejected as mere special pleading. The methodological position here:

─ Religious experience, when meeting the conditions of established doxastic practice, adds genuine confirmatory weight to the theistic hypothesis, but alone is insufficient to build strong presumption.
─ Gale's and Fales' objections regarding the absence of cross-checking and contradiction between traditions are serious objections that reduce this weight, without eliminating it.
─ The confirmatory strength of religious experience is magnified when combined with independent evidence: cosmological, moral, design, or historical arguments.

Cumulative presumption means religious experience is one thread in an epistemological rope. It should neither be burdened with more than it can bear, nor neglected. Alston's argument remains a serious philosophical contribution deserving its place in the structure of cumulative reasoning.