Philosophy Quotes
Questions about meaning, existence, and truth from thinkers who spent their lives searching for answers.
43879 quotes
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"The foundations of mathematics rest on axioms that we accept without proof, by an act of intellectual faith."Tarski, Alfred
"Nominalism and realism in mathematics are not merely different opinions; they are different ways of seeing the world."Tarski, Alfred
"Quantification over infinite domains introduces complexities that finite minds must strain to comprehend."Tarski, Alfred
"The relationship between language and reality is not one of simple mirroring but of complex interpretation."Tarski, Alfred
"The paradox of the liar sentence shows that truth and falsity are not exhaustive categories for all linguistic expressions."Tarski, Alfred
"The quest for a complete description of reality must reckon with Gödel's incompleteness theorems."Tarski, Alfred
"In formal languages, ambiguity is the enemy; in natural languages, it is often the friend of efficiency and flexibility."Tarski, Alfred
"The law of non-contradiction is not a law of nature but a law of thought we find ourselves unable to violate."Tarski, Alfred
"Formal systems are elegant precisely because they achieve much while assuming little."Tarski, Alfred
"The semantic ascent from talking about objects to talking about words about objects is not a mere change of subject."Tarski, Alfred
"Every language contains within it a metaphysics; to change our language is to change our conception of what exists."Tarski, Alfred
"Logic is the anatomy of thought."Church, Alonzo
"Formalism without intuition produces sterile symbol manipulation; intuition without formalism produces vague speculation."Church, Alonzo
"Every system of logic contains the seeds of its own questions."Church, Alonzo
"Axioms are assumptions we accept to explore their consequences."Church, Alonzo
"Formal systems are mirrors in which we see the reflection of our own thought."Church, Alonzo
"Logic is the discipline of necessary inference."Church, Alonzo
"Logic without intuition is blind; intuition without logic is empty."Church, Alonzo
"Logic is the art of maintaining consistency while exploring possibility."Church, Alonzo
"An axiom is a statement we choose to accept as the basis for further reasoning."Church, Alonzo
"The paradoxes of self-reference teach us to refine our understanding of logical foundation."Church, Alonzo
"The mind and the world jointly make up the mind and the world."Putnam, Hilary
"Rationality is not about discovering a single right answer, but about navigating multiple perspectives."Putnam, Hilary
"Metaphysics is not the study of reality itself, but of our ways of talking about reality."Putnam, Hilary
"The notion of an ideal language is a philosophical fantasy."Putnam, Hilary
"We are trapped in the web of our own language, yet that web connects us to everything."Putnam, Hilary
"Realism without a ready-made world is still realism."Putnam, Hilary
"The internal realist says: yes, there is a world, but we make it through our concepts."Putnam, Hilary
"Analytic philosophy and Continental philosophy need not be at war."Putnam, Hilary
"The verification principle is self-refuting; we cannot verify that only verifiable statements are meaningful."Putnam, Hilary