Philosophy Quotes

Questions about meaning, existence, and truth from thinkers who spent their lives searching for answers.

43879 quotes

F
"Thought is not a private possession but something objective and eternal."
Frege, Gottlob
F
"Every valid inference preserves truth through logical necessity."
Frege, Gottlob
F
"The concept is what remains when we remove the marks of individual thinkers."
Frege, Gottlob
F
"The sign points beyond itself to what is meant."
Frege, Gottlob
F
"We speak as if objects have properties, but these are conceptual impositions."
Frege, Gottlob
F
"Concepts organize reality; they do not create it."
Frege, Gottlob
F
"The objective world is knowable only through thought."
Frege, Gottlob
F
"The fundamental distinction is between object and concept."
Frege, Gottlob
F
"Logical form is what remains invariant across different expressions."
Frege, Gottlob
F
"Objects fall under concepts; concepts do not fall under objects."
Frege, Gottlob
F
"Thought grasps the eternal and unchanging."
Frege, Gottlob
F
"The realm of sense is populated by thoughts, which are abstract entities."
Frege, Gottlob
F
"Objects and concepts are ontologically distinct categories."
Frege, Gottlob
F
"Reality has a structure that thought can mirror."
Frege, Gottlob
F
"Sense determines reference through the mediation of logical structure."
Frege, Gottlob
C
"To compute is to think; to think deeply is to compute eternally."
Church, Alonzo
C
"The universe is indifferent; this is what makes human meaning precious."
Church, Alonzo
C
"The examined life is the only life worth living."
Church, Alonzo
P
"The mind uses its faculty for reason to extinguish the very faculty by which it reasons."
Poincaré, Henri
P
"The effort to understand the universe is one of the very few things that lifts human life a little above the level of farce."
Poincaré, Henri
P
"Language is a tool for the concealment of thought."
Poincaré, Henri
P
"In the realm of ideas, a thousand possibilities exist; in the realm of action, only one."
Poincaré, Henri
P
"To understand others, we must first understand ourselves."
Poincaré, Henri
P
"To know yourself is to begin to know the universe."
Poincaré, Henri
W
"The art of progress is to preserve order amid change and to preserve change amid order."
Whitehead, Alfred North
W
"The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato."
Whitehead, Alfred North
W
"The true method of philosophy is like the flight of an aeroplane."
Whitehead, Alfred North
W
"The paradox of realism is only to be avoided by the recognition that the universe exhibits a creativity irreducible to either mentality or physicality."
Whitehead, Alfred North
W
"The purpose of philosophy is to rationalize mysticism: not to deny it."
Whitehead, Alfred North
W
"Importance is the things that matter beyond the surface of immediate fact."
Whitehead, Alfred North