Is my personal conviction sufficient as proof, or is external evidence necessary?

This question is central for anyone seeking truth in any subject, especially regarding the question of God. Many believers say "I am convinced in my heart," and many atheists demand "tangible scientific evidence." Both positions contain truth and falsehood. The precise philosophical question is: What makes a belief epistemologically justified? Is subjective conviction sufficient? Or is objective evidence necessary? Or is the truth somewhere in between?

Inadequate Responses to Avoid

From some believers:

"My heart tells me God exists, and that's enough." This is emotionally sincere but epistemologically problematic. If heartfelt conviction alone were sufficient, how would we distinguish between contradictory convictions? Some people feel in their hearts that multiple gods exist, others feel there is no god. Are they all right? Subjective conviction is important, but it's not a sufficient criterion for truth.

"Faith doesn't need evidence; it's a leap." This confuses faith with blindness. Even Kierkegaard, who spoke of "the leap," didn't mean a completely blind leap, but rather a leap based on deep existential reasons. Mature faith is not against reason, but transcends the limits of absolute proof—a significant difference.

From some atheists:

"Without empirical scientific evidence, everything is superstition." This is naive scientism. Many of our basic beliefs—the existence of other minds, the reliability of memory, the existence of the past—cannot be proven through empirical scientific methods. Does this make them superstitions? Of course not. Human knowledge is broader than empirical science.

"Personal convictions are merely psychological delusions." This is excessive reductionism. True, some convictions may be delusions, but not all of them. Our moral intuition (that injustice is wrong), our aesthetic intuition (that this painting is beautiful), our rational intuition (that contradiction is impossible)—these are all personal convictions with epistemic value. Rejecting them all leads to destructive skepticism.

Why These Responses Are Inadequate

They share a binary view: either purely subjective or purely objective. The reality is that human knowledge—especially in major existential questions—combines both elements. Even in science, intuition and personal creativity play a role in discovery. And even in religion, subjective experience needs rational examination.

Serious Positions in the Debate

First, the moderate integrative position. Many contemporary philosophers (such as Richard Swinburne, Alvin Plantinga) view religious knowledge as combining subjective and objective elements. Personal conviction has value, especially if based on deep experience or strong intuition. But it becomes stronger when supported by rational arguments, historical evidence, and internal coherence. It's not "either/or," but "both together."

Second, the Reformed epistemology position. Plantinga goes further: some beliefs are "properly basic," meaning justified without need for inference. Just as we trust our senses without proof of their reliability, we might trust our religious sense (sensus divinitatis) if it functions properly. This doesn't mean every religious conviction is correct, but that some may be justified even without external arguments.

Third, the moderate evidentialist position. Others (such as William Lane Craig) view personal conviction as potentially sufficient for the individual, but dialogue with others requires shared evidence. I cannot convince you with my internal conviction, but I can point to cosmic, moral, and historical evidence we can examine together. External evidence isn't for convincing oneself, but for dialogue with others.

Fourth, the cumulative position. The position of god-database.com itself: no single conviction or piece of evidence is sufficient alone. Rather, the sum of indicators—from the cosmos, from humanity, from history, from personal experience—accumulate to form rational preponderance (rajḥān ʿaqlī). Each indicator alone may be weak, but together they form a strong case, like threads woven to become a strong rope.

The Required Balance

Wisdom lies in combining both elements:

- Personal conviction is important because we are complete beings (reason, emotion, intuition, and experience), not merely inference machines.
- External evidence is important because we want to distinguish between genuine convictions and delusions, and we need to communicate with others.
- In major existential questions, we rarely find "conclusive proof," but rather "cumulative preponderance" that combines subjective and objective indicators.

Where We Stand in This Debate Today

Contemporary philosophy transcends the old binary (subjective/objective) toward a more synthetic understanding of human knowledge. Even in science, the role of intuition and imagination is recognized. And in religion, the role of reason and evidence is important. Wisdom lies not in choosing one side, but in understanding how both sides work together in our search for truth.

For Advanced Reading

- Intermediate level: Plantinga's theory of basic beliefs and how it redefines "evidence"
- Advanced level: Cumulative argument in contemporary philosophy of religion: from Pascal to Swinburne
- Introduction to "The Cumulative Method" on the website's main page