Philosophy Quotes
Questions about meaning, existence, and truth from thinkers who spent their lives searching for answers.
43879 quotes
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"The true domain of the mind is the relationship between things."Poincaré, Henri
"The physicist is not merely a scientist; he is also a human being."Poincaré, Henri
"The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth."Bohr, Niels
"We cannot escape the fact that the world we know is constructed in order to be experienced by minds like ours."Bohr, Niels
"Questions concerning scientific method and philosophical interpretation are inseparable."Bohr, Niels
"A physicist is just an atom's way of looking at itself."Bohr, Niels
"Every sentence I utter must be understood not as an affirmation, but as a question."Bohr, Niels
"We cannot separate the observer from the observed."Bohr, Niels
"In quantum mechanics, we are forced to reconsider what we mean by reality."Bohr, Niels
"We must learn to think in new ways about the relationship between thought and reality."Bohr, Niels
"In the end, we are all passengers on the same ship of civilization, and it behooves us to understand the course we are taking."Weyl, Hermann
"The principle of excluded middle cannot simply be assumed; it must be earned through construction."Brouwer, Luitzen Egbertus Jan
"The structure of mathematics mirrors the structure of the mind that creates it."Brouwer, Luitzen Egbertus Jan
"Every infinite sequence is a meditation on the nature of potential and becoming."Brouwer, Luitzen Egbertus Jan
"The principle of bivalence must be earned through rigorous proof, not assumed from on high."Brouwer, Luitzen Egbertus Jan
"To embrace constructivism is to embrace responsibility for what we claim to know."Brouwer, Luitzen Egbertus Jan
"To prove a theorem is to participate in the ongoing creation of meaning itself."Brouwer, Luitzen Egbertus Jan
"The infinite! No other question has ever moved so profoundly the spirit of man."Hilbert, David
"Mathematics does not just describe the world—it reveals its deepest structure."Hilbert, David
"The consistency of our axioms is not guaranteed by the axioms themselves."Hilbert, David
"The infinite cannot be contained in the finite, yet we try anyway."Hilbert, David
"In the end, mathematics is a conversation between the human mind and the structure of reality."Hilbert, David
"The infinite is not a number; it is a concept that transcends number."Hilbert, David
"The structure of mathematics mirrors the structure of thought itself."Hilbert, David
"In mathematics, as in life, meaning emerges from pattern and structure."Hilbert, David
"In the end, all mathematical knowledge returns to first principles."Hilbert, David
"God does not play dice with the universe."Einstein, Albert
"The most incomprehensible thing about the world is that it is comprehensible."Einstein, Albert
"The effort to understand the universe is one of the very few things that lifts human life above the level of farce."Einstein, Albert
"One should as a rule respect public opinion in so far as is necessary to avoid starvation and to prevent one's children from being deserted."Einstein, Albert