A Quote by Carl Sagan

'In his celebrated book, 'On Liberty', the English philosopher John Stuart Mill argued that silencing an opinion is "a peculiar evil." If the opinion is right, we are robbed of the "opportunity of exchanging error for truth"; and if it's wrong, we are deprived of a deeper understanding of the truth in its "collision with error." If we know only our own side of the argument, we hardly know even that: it becomes stale, soon learned by rote, untested, a pallid and lifeless truth.'

Carl Sagan

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Argued Argument Becomes Book Celebrated Collision Deeper Deeper Understanding Deprived English Error Even Evil Exchanging Hardly His John Know Learned Liberty Lifeless Mill Only Opinion Opportunity Our Own Peculiar Philosopher Right Robbed Rote Side Silencing Soon Stale Truth Understanding Wrong

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Carl Sagan
American - Scientist
November 9, 1934 - December 20, 1996

The peculiar evil of silencing the expression of an opinion is, that it is robbing the human race; posterity as well as the existing generation; those who dissent from the opinion, still more than those who hold it. If the opinion is right, they are deprived of the opportunity of exchanging error for truth: if wrong, they lose, what is almost as great a benefit, the clearer perception and livelier impression of truth, produced by its collision with error.

John Stuart Mill

The soul is the perceiver and revealer of truth. We know truth when we see it, let skeptic and scoffer say what they choose. Foolish people ask you, when you have spoken what they do not wish to hear, 'How do you know it is truth, and not an error of your own?' We know truth when we see it, from opinion, as we know when we are awake that we are awake.

Ralph Waldo Emerson

Error is a supposition that pleasure and pain, that intelligence, substance, life, are existent in matter. Error is neither Mind nor one of Mind's faculties. Error is the contradiction of Truth. Error is a belief without understanding. Error is unreal because untrue. It is that which stemma to be and is not. If error were true, its truth would be error, and we should have a self-evident absurdity -namely, erroneous truth. Thus we should continue to lose the standard of Truth.

Mary Baker Eddy

The truth shall set you free. When you hear the truth, it sets you free. So mathematics is truth. It adds up. There's no error. Only time there's an error is when man miscalculates his own problems or his own equations.

Rza

In truth, opinion may be taken for understanding; understanding cannot be taken for opinion. How so? Surely because opinion may be deceived; understanding cannot be. If it could, it would not be understanding but opinion. For true understanding has not only certain truth, but the knowledge of truth.

Saint Bernard

It is too often believed that a person in his progress towards perfection passes from error to truth; that when he passes on from one thought to another, he must necessarily reject the first. But no error can lead to truth. The soul passing through its different stages goes from truth to truth, and each stage is true; it goes from lower truth to higher truth.

Swami Vivekananda

Every opinion which embodies somewhat of the portion of truth which the common opinion omits, ought to be considered precious, with whatever amount of error and confusion that truth may be blended.

John Stuart Mill

If the Story is not accurate to reality, it's not any kind of truth at all. So it can never be 'my truth' or 'your truth,' even though we may believe it. It can only be our delusion or our mistake or our error, but it can never be our 'truth.'

Greg Koukl

Since the general or prevailing opinion on any subject is rarely or never the whole truth, it is only by the collision of adverse opinion that the remainder of the truth has any chance of being supplied.

John Stuart Mill

Let the answers be wrong, let the philosophy be mistaken - errors are more valuable than truths: truth is of the machine, error is alive; truth reassures, error disturbs.

Yevgeny Zamyatin

We have hitherto considered only two possibilities: that the received opinion may be false, and some other opinion, consequently, true; or that, the received opinion being true, a conflict with the opposite error is essential to a clear apprehension and deep feeling of its truth. But there is a commoner case than either of these; when the conflicting doctrines, instead of being one true and the other false, share the truth between them.

John Stuart Mill

It's always wise to seek the truth in our opponents' error, and the error in our own truth.

Reinhold Niebuhr

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 opposite. 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.

H. L. Mencken

Truth is contrary to our nature, not so error, and this for a very simple reason: truth demands that we should recognize ourselves as limited, error flatters us that, in one way or another, we are unlimited.

Johann Wolfgang von Goethe

The argument against the persecution of opinion does not depend upon what the excuse for persecution may be. The argument is that we none of us know all truth, that the discovery of new truth is promoted by free discussion and rendered very difficult by suppression.

Bertrand Russell

It is as certain as it is strange that truth and error come from one and the same source. Thus it is that we are often not at liberty to do violence to error, because at the same time we do violence to truth.

Johann Wolfgang von Goethe

A Quote by Carl Sagan

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