Chisholm Quote on Foundationalism: The Need for Basic Beliefs

Quote

"If we are to have knowledge of the world, we must have some beliefs that are not derived from other beliefs."

— Roderick Chisholm, Theory of Knowledge (1966, 1st edition)

Context

This passage appears in Roderick Chisholm's Theory of Knowledge (1966), one of the most important works of 20th-century epistemology. Chisholm, a professor at Brown University for nearly four decades, was the leading defender of foundationalism in an era when coherentism — the view that beliefs are justified by their mutual support rather than by resting on a foundation — was gaining ground.

Foundationalism is an ancient view with roots in Aristotle, but its modern form was shaped by Descartes' quest for certainty. The core idea is that our system of beliefs has a structure: some beliefs are basic — justified without relying on other beliefs — while others are derived, justified by their relationship to the basic ones. Think of a building: the foundation supports the upper floors, which in turn support the roof.

The alternative, coherentism, holds that beliefs support each other in a web rather than resting on a foundation. Imagine a raft: the planks support each other, and no single plank is the "foundation." The worry about coherentism, which Chisholm presses, is that it seems circular — if every belief is justified by other beliefs, where does the justification ultimately come from?

Chisholm's quote is a response to this worry. He is arguing that without basic beliefs — beliefs that are justified directly, not through inference from other beliefs — the entire structure of knowledge collapses. If every belief needed to be justified by another belief, we would face an infinite regress (belief A justified by B, B by C, C by D, forever) or a circle (A justified by B, B by C, C by A). The only escape, Chisholm insists, is to have some beliefs that are self-justifying — not derived from anything else.

Meaning

Chisholm is making a structural claim about the architecture of knowledge. He's not saying which specific beliefs are basic — that's a separate question. He's saying that some beliefs must be basic if knowledge is possible at all.

Consider how you know that you're reading this text right now. You might say: "I see the words, and seeing is a reliable source of information." But how do you know that seeing is reliable? You might say: "Because it has always worked in the past." But how do you know that? "Because I remember it." And how do you know your memory is reliable?

This chain of justification has to end somewhere. Chisholm's point is that it ends not with another belief, but with something more direct — a perceptual experience, an introspective awareness, or a self-evident truth. These basic beliefs are not justified by inference from other beliefs; they are justified by their very nature, by the kind of mental state they are.

The phrase "not derived from other beliefs" is crucial. Chisholm isn't saying these beliefs come from nowhere — they arise from experience, perception, or rational intuition. He's saying their justification doesn't depend on other beliefs. They are epistemically basic even if they are psychologically caused by sensory input or mental activity.

Philosophical Significance

Chisholm's defense of foundationalism shaped epistemology in several key ways:

The structure of justification: Chisholm's argument revived the classic debate between foundationalism and coherentism that continues to this day. His insistence on the need for basic beliefs forced coherentists like Laurence BonJour and Keith Lehrer to develop increasingly sophisticated accounts of how circular justification can be virtuous rather than vicious.

Self-presenting properties: Chisholm developed a distinctive account of what makes a belief basic. He argued that certain mental states — such as being appeared-to in a certain way, or thinking a certain thought — are "self-presenting": the fact that you are in that state is directly evident to you, without needing further evidence. This offered a middle path between Cartesian certainty and mere probabilistic belief.

Direct realism: Chisholm's foundationalism supported a form of direct realism — the view that we perceive the world directly, not through intermediaries like sense-data. Basic perceptual beliefs, on his account, are about external objects, not about private mental images. This contrasted with the sense-data theory of Russell and Moore.

The Gettier problem: Chisholm's work on foundationalism interacted with the Gettier problem — the discovery that justified true belief is not sufficient for knowledge. His account of basic beliefs offered one response: perhaps the "extra ingredient" needed for knowledge is a special kind of non-inferential justification.

Contemporary influence: While pure foundationalism has fewer defenders today than in Chisholm's time, modified forms — such as reformed epistemology (Alvin Plantinga) and moderate foundationalism — continue to be influential. The basic insight that not all justification can be inferential remains a live option in epistemology.

Sources

1. Chisholm, R. (1966). Theory of Knowledge. Prentice-Hall (1st edition; revised editions 1977, 1989).
2. "Roderick Chisholm," Stanford Encyclopedia of Philosophy. Available at: https://plato.stanford.edu/entries/chisholm/
3. "Foundationalism," Stanford Encyclopedia of Philosophy. Available at: https://plato.stanford.edu/entries/foundationalism/
4. "Epistemology," Internet Encyclopedia of Philosophy. Available at: https://iep.utm.edu/episte/
5. Chisholm, R. (1982). The Foundations of Knowing. University of Minnesota Press.