Truth Quotes

What is truth? These quotes explore honesty, reality, and the courage it takes to face both.

40912 quotes

F
"To grasp a thought is to apprehend something objective and mind-independent."
Frege, Gottlob
F
"Vagueness is the enemy of philosophical clarity and scientific truth."
Frege, Gottlob
F
"A proposition is true when its sense corresponds to reality; false when it does not."
Frege, Gottlob
F
"To err in logic is to err in our very apprehension of reality."
Frege, Gottlob
F
"The boundaries of a concept should be determinate or it is not a true concept."
Frege, Gottlob
F
"Ambiguity in expression often conceals confusion in thought."
Frege, Gottlob
F
"Truth is not a matter of opinion or convention but of objective correspondence."
Frege, Gottlob
F
"A statement is true if and only if it corresponds to the objective facts."
Frege, Gottlob
F
"The pursuit of precision in language is the pursuit of truth in thought."
Frege, Gottlob
F
"The law of identity states that a thing is equal to itself; this is foundational."
Frege, Gottlob
F
"The task of philosophy is to clarify thought by clarifying language."
Frege, Gottlob
P
"Truth is not correspondence to reality."
Putnam, Hilary
P
"Objective truth is still possible even if we reject metaphysical realism."
Putnam, Hilary
P
"Not all truths are empirically verifiable."
Putnam, Hilary
P
"Truth is elusive but not illusory."
Putnam, Hilary
C
"Mathematical proof is the closest thing we have to absolute certainty."
Church, Alonzo
C
"In logic and mathematics, ambiguity is the greatest enemy."
Church, Alonzo
C
"Decidability is the boundary between the computable and the unknowable."
Church, Alonzo
C
"Mathematics deals with the permanent and unchanging aspects of existence."
Church, Alonzo
C
"Formal systems show us that there are limits to what any finite algorithm can accomplish."
Church, Alonzo
C
"The undecidable represents not a gap in mathematics, but its true infinite nature."
Church, Alonzo
C
"To prove something is impossible is sometimes more valuable than to prove something is possible."
Church, Alonzo
C
"A formal proof is a path through logical space that cannot be disputed."
Church, Alonzo
C
"In formal logic, clarity is not an added virtue but a prerequisite for correctness."
Church, Alonzo
C
"In the realm of formal systems, contradiction is not a point of view but a revelation of error."
Church, Alonzo
C
"In formal reasoning, doubt is not a virtue but an impediment."
Church, Alonzo
T
"The popular view that scientists ever seek, or ever could seek, absolute truth has become outdated."
Turing, Alan
T
"Let us return for a moment to Lady Lovelace's objection. One cannot 'choose' to obey the laws of nature."
Turing, Alan
D
"Anti-realism is the view that truth is not independent of human thought or language."
Dummett, Michael
D
"Language is not a mirror of reality but a tool we have created."
Dummett, Michael