Knowledge Quotes

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

31147 quotes

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"I think the real problem is that people don't think about thinking."
Gödel, Kurt
G
"Formal systems are incomplete; we must transcend them with intuition."
Gödel, Kurt
G
"Every finite mathematical system has truths that cannot be derived from it."
Gödel, Kurt
G
"To understand mathematics deeply is to glimpse the nature of the cosmos."
Gödel, Kurt
G
"Mathematics is not about numbers; it is about relationships and structures."
Gödel, Kurt
G
"Every proof reveals not just the conclusion, but the shape of thought itself."
Gödel, Kurt
G
"Every answer in mathematics opens new questions."
Gödel, Kurt
G
"Infinity is not a number; it is a concept that transcends number."
Gödel, Kurt
G
"What cannot be formalized can still be understood."
Gödel, Kurt
N
"We must acknowledge the limits of reductionism in understanding the mind."
Nagel, Thomas
N
"The mind-body problem is central to all philosophy."
Nagel, Thomas
N
"Skepticism about the external world is rationally compelling."
Nagel, Thomas
N
"The universe is fundamentally mysterious to human understanding."
Nagel, Thomas
N
"Knowledge of what it is like requires direct experience."
Nagel, Thomas
N
"Knowledge without understanding is incomplete."
Nagel, Thomas
N
"Self-knowledge is limited by the nature of consciousness."
Nagel, Thomas
T
"The semantic conception of truth allows us to speak meaningfully about what makes statements true or false."
Tarski, Alfred
T
"Mathematical truth has a peculiar objectivity that survives independent of our preferences or beliefs."
Tarski, Alfred
T
"The hierarchy of languages reveals that no single language can fully describe itself without paradox."
Tarski, Alfred
T
"To ignore the paradoxes of language is to ignore some of the deepest problems of thought itself."
Tarski, Alfred
T
"Every symbolic system contains within it the seeds of its own limitations."
Tarski, Alfred
T
"To understand how language works is to understand much about how the mind works."
Tarski, Alfred
T
"In the realm of formal systems, what is provable is more limited than what is true."
Tarski, Alfred
T
"The search for a unified theory of truth may itself be a misguided quest."
Tarski, Alfred
T
"The semantic paradoxes are not mere puzzles; they reveal deep truths about the nature of language and meaning."
Tarski, Alfred
T
"Variables in a logical formula behave much like pronouns in natural language: their reference depends on context."
Tarski, Alfred
T
"The logical form of a sentence may be hidden beneath its grammatical form."
Tarski, Alfred
T
"Logical truth is discovered, not invented, though the methods of discovery are creations of human ingenuity."
Tarski, Alfred
T
"We are tempted to ask what exists, but first we must understand what we mean by 'exists'."
Tarski, Alfred
T
"The attempt to ground all mathematics in formal logic revealed both the power and limits of that approach."
Tarski, Alfred