Knowledge Quotes

From ancient scholars to modern scientists, these quotes explore what it means to learn and to know.

31147 quotes

T
"Words carry history within them; to use a word is to inherit the meanings others have given it."
Tarski, Alfred
T
"Logic does not forbid us from holding false beliefs; it only makes explicit what follows if we do."
Tarski, Alfred
C
"Recursion teaches us that self-reference is neither contradiction nor paradox, but clarification."
Church, Alonzo
C
"The unsolvable problem is not a failure of mathematics but a revelation of its structure."
Church, Alonzo
C
"The uncomputable is not mysterious; it is merely beyond the reach of finite procedures."
Church, Alonzo
C
"The equivalence of different computational models reveals deep unity beneath surface difference."
Church, Alonzo
C
"To understand recursion is to understand self-replication at the level of pure logic."
Church, Alonzo
C
"An equivalence is a bridge between two seemingly different domains."
Church, Alonzo
C
"The infinite is not mysterious but precisely defined within formal systems."
Church, Alonzo
C
"The reduction principle shows that complex ideas emerge from simple foundations."
Church, Alonzo
C
"To understand recursion is to understand how infinity can be encoded in finitude."
Church, Alonzo
P
"The fact that we can question our own concepts shows the flexibility of human thought."
Putnam, Hilary
P
"Meaning is holistic; no single word or concept stands alone in its significance."
Putnam, Hilary
P
"The picture theory of meaning oversimplifies how language actually works."
Putnam, Hilary
P
"Reference is not a simple two-term relation between words and things."
Putnam, Hilary
P
"The context principle: meaning is determined by context, not by intrinsic properties."
Putnam, Hilary
P
"Externalism about mental content is one of the most important insights of modern philosophy."
Putnam, Hilary
P
"Wittgenstein's language games illuminate how meaning is embedded in practice."
Putnam, Hilary
P
"Holism in semantics challenges the idea that meaning is built up compositionally."
Putnam, Hilary
P
"The causal theory of reference has profound implications for how we understand names and descriptions."
Putnam, Hilary
P
"The analytic synthetic distinction, while useful, is not as sharp as some believed."
Putnam, Hilary
P
"Logic is not infallible; it is a tool that we refine through use."
Putnam, Hilary
P
"The role of the conceptual scheme is not to distort reality, but to make it intelligible to us."
Putnam, Hilary
P
"The idea that meaning is in the head is one of the most destructive in philosophy of mind."
Putnam, Hilary
P
"Bayesian reasoning illuminates rational belief, but it cannot replace practical deliberation."
Putnam, Hilary
P
"Testimony is a source of knowledge, not merely a derivative way of knowing."
Putnam, Hilary
P
"Virtue epistemology recovers important truths about knowledge that internalism and externalism both miss."
Putnam, Hilary
C
"The explanatory gap between physical description and conscious experience remains one of philosophy's greatest challenges."
Chalmers, David
C
"Understanding consciousness requires insights from philosophy, neuroscience, and physics working together."
Chalmers, David
C
"We must distinguish between the easy problems and the hard problem of consciousness."
Chalmers, David