Truth, indeed, is something that is believed in completely only by persons who have never tried personally to pursue it to its fastness and grab it by the tail. It is the adoration of second-rate men — men who always receive it as second-hand. Pedagogues believe in immutable truths and spend their lives trying to determine them and propagate them; the intellectual progress of man consists largely of a concerted effort to block and destroy their enterprise. Nine times out of ten, in the arts as in life, there is actually no truth to be discovered; there is only error to be exposed. In whole departments of human inquiry it seems to me quite unlikely that the truth ever will be discovered. Nevertheless, the rubber-stamp thinking of the world always makes the assumption that the exposure of an error is identical with the discovery of truth — that error and truth are simply opposites. They are nothing of the sort. What the world turns to, when it has been cured of one error, is usually simply another error, and maybe one worse than the first one. This is the whole history of the intellect in brief. The average man of today does not believe in precisely the same imbecilities that the Greek of the Fourth Century before Christ believed in, but the things that he does believe in are often quite as idiotic. Perhaps this statement is a bit too sweeping. There is, year by year, a gradual accumulation of what may be called, provisionally, truths — there is a slow accretion of ideas that somehow manage to meet all practicable human tests, and so survive. But even so, it is risky to call them absolute truths. All that one may safely say of them is that no one, as yet, has demonstrated that they are errors. Soon or late, if experience teaches us anything, they are likely to succumb too. The profoundest truths of the Middle Ages are now laughed at by schoolboys. The profoundest truths of democracy will be laughed at, a few centuries hence, even by school-teachers.

One voice speaking truth is a greater force than fleets and armies...

Nothing will shake a man-or at any rate a man like me-out of his merely verbal thinking and his merely notional beliefs. He has to be knocked silly before he comes to his senses. Only torture will bring out the truth. Only under torture does he discover it himself.

Even if philosophers were in a position to discover truth, who among them would be interested in it? Each knows well that his system is not better founded than the others; but he supports it because it is his.

Truth is only belived when someone has invented it well.

Truth gains more even by the errors of one who, with due study and preparation, thinks for himself, than by the true opinions of those who only hold them because they do not suffer themselves to think…

One drop of truth can outweigh an ocean of lies

The version of reality a man adopts will depend largely on his values. … It is therefore possible for a learned man, who has conscientiously acquired a vast, carefully organized, and scrupulously representative mass of historical, sociological, and psychological knowledge, to be nevertheless disastrously wrong about its human meaning.

One man who stopped lying could bring down a tyranny.

People are generally better persuaded by the reasons which they have themselves discovered than by those which have come into the mind of others.

If one tells the truth, one is sure, sooner or later, to be found out.

A very great deal more truth can become known than can be proven.

For it seemed to me that much more truth could be found in the reasonings which a man makes concerning matters that concern him than in those which some scholar makes in his study about speculative matters. For the consequences of the former will soon punish the man if he judges wrongly, whereas the latter have no practical consequences and no importance for the scholar except that perhaps the further they are from common sense the more pride he will take in them, since he will have had to use so much more skill and ingenuity in trying to render them plausible.

A man may imagine things that are false, but he can only understand things that are true.