Truth Quotes

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

40912 quotes

H
"Mathematics reveals the essential nature of things."
Hilbert, David
H
"Truth is the reward of those who dare to seek it."
Hilbert, David
E
"If the facts don't fit the theory, change the facts."
Einstein, Albert
E
"Unthinking respect for authority is the greatest enemy of truth."
Einstein, Albert
E
"The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth."
Einstein, Albert
E
"The word 'belief' is a difficult thing for me. I do not believe. I must have knowledge."
Einstein, Albert
W
"The truth is rarely pure and never simple in matters of the human heart."
Weyl, Hermann
W
"Truth cannot be manufactured; it can only be discovered."
Weyl, Hermann
W
"There is a gulf between the intuitions of natural man and the results of careful analysis."
Wigner, Eugene
W
"The scientist must be prepared to abandon his most cherished beliefs when the evidence demands it."
Wigner, Eugene
W
"The ultimate test of a physical theory is not whether it is elegant or intuitive, but whether it corresponds to reality."
Wigner, Eugene
W
"Every experiment that tests a theory is an experiment that could overturn it; that is the strength of science."
Wigner, Eugene
W
"The scientist's duty is to question not only nature but also the assumptions we bring to our questioning."
Wigner, Eugene
W
"A physical theory that cannot be expressed simply is probably not a true theory."
Wigner, Eugene
W
"The most important moments in science come when our theories fail to match reality."
Wigner, Eugene
H
"The first principle is that you must not fool yourself, and you are the easiest person to fool."
Heisenberg, Werner
H
"Purity of heart will guide you to truth, but truth is not always pure."
Heisenberg, Werner
H
"In the discussion between Bohr and Einstein on quantum mechanics, neither of them had the whole truth."
Heisenberg, Werner
H
"What cannot be measured does not exist in science, but existence transcends measurement."
Heisenberg, Werner
H
"What we can say about nature depends on the language we use."
Heisenberg, Werner
H
"Scientific truth is precise within limits, and those limits must always be recognized."
Heisenberg, Werner
P
"There is no absolute knowledge. And those who claim it, whether they are scientists or dogmatists, open the door to tragedy."
Poincaré, Henri
P
"The absence of contradiction is not the criterion of truth."
Poincaré, Henri
P
"The scientist only imposes two things, namely truth and that kind of mental honesty which forces us to face up to uncomfortable facts."
Poincaré, Henri
P
"Let me state my conviction: truth is the only thing worth defending."
Poincaré, Henri
P
"There is no final word in science, only better approximations of the truth."
Poincaré, Henri
B
"Truth and clarity go hand in hand."
Bohr, Niels
B
"The first principle is that you must not fool yourself—and you are the easiest person to fool."
Bohr, Niels
B
"Every great truth begins as heresy and ends as dogma."
Bohr, Niels
W
"To those who say science has no place for ethics, I respond that ethics has no foundation without science."
Weyl, Hermann