Paul Feyerabend Quotes

If we will disbelieve everything, because we cannot certainly know all things, we shall do much what as wisely as he who would not use his legs, but sit still and perish, because he had no wings to fly.

I know too much to be a sceptic and too little to be a dogmatist.

We must consider both the ultimate end and all clear sensory evidence, to which we refer our opinions; for otherwise everything will be full of uncertainty and confusion.

Philosophy limits the thinkable and therefore the unthinkable.

A good philosopher is one who does not take ideas seriously.

Philosophy consists very largely of one philosopher arguing that all others are jackasses. He usually proves it, and I should add that he also usually proves that he is one himself.

Finding bad reasons for what one believes for other bad reasons - that's philosophy.

It is a dangerous and fateful presumption, besides the absurd temerity that it implies, to disdain what we do not comprehend. For after you have established, according to your fine undertstanding, the limits of truth and falsehood, and it turns out that you must necessarily believe things even stranger than those you deny, you are obliged from then on to abandon these limits.

It is precisely in knowing its limits that philosophy consists.

Descartes spent far too much time in bed subject to the persistent hallucination that he was thinking. You are not free from a similar disorder.

The difficulty in philosophy is to say no more than we know.

If ... it is not in my power to arrive at the knowledge of any truth, I may at least do what is in my power, namely, suspend judgement.

The agnostic does not simply say, "l do not know." He goes another step, and he says, with great emphasis, that you do not know. He insists that you are trading on the ignorance of others, and on the fear of others. He is not satisfied with saying that you do not know, -- he demonstrates that you do not know, and he drives you from the field of fact -- he drives you from the realm of reason -- he drives you from the light, into the darkness of conjecture -- into the world of dreams and shadows, and he compels you to say, at last, that your faith has no foundation in fact.

Their [the Skeptics'] way of speaking is: "I settle nothing. . . . I do not understand it. . . . Nothing seems true that may not seem false." Their sacramental word is . . . , which is to say, I suspend my judgment.

Belief is in ignorance. If you know, you know. And it is good that if you don’t know, know that you don’t know — the belief can deceive you. The belief can create an atmosphere in your mind, where, without knowing, you start thinking that you know. Belief is not trust, and the more strongly you say that you believe totally, the more you are afraid of the doubt within you.

There are genuine mysteries in the world that mark the limits of human knowing and thinking. Wisdom is fortified, not destroyed, by understanding its limitations. Ignorance does not make a fool as surely as self-deception.

Following Korzybski, I put things in probabilities, not absolutes... My only originality lies in applying this zetetic attitude outside the hardest of the hard sciences, physics, to softer sciences and then to non-sciences like politics, ideology, jury verdicts and, of course, conspiracy theory.

The beliefs which we have most warrant for have no safeguard to rest on but a standing invitation to the whole world to prove them unfounded. If the challenge is not accepted, or is accepted and the attempt fails, we are far enough from certainty still; but we have done the best that the existing state of human reason admits of; we have neglected nothing that could give the truth a chance of reaching us.

To recognize that some of the things our culture believes are not true imposes on us the duty of finding out which are true and which are not.

I have what I call an iron prescription that helps me keep sane when I naturally drift toward preferring one ideology over another and that is: I say that I'm not entitled to have an opinion on this subject unless I can state the arguments against my position better than the people who support it. I think only when I've reached that state am I qualified to speak. This business of not drifting into extreme ideology is a very, very important thing in life

Socrates' way of life is the consequence of his recognition that we can know what it is that we do not know about the most important things and that we are by nature obliged to seek that knowledge.

It has often been argued that absolute scepticism is self-contradictory; but this is a mistake: and even if it were not so, it would be no argument against the absolute sceptic, inasmuch as he does not admit that no contradictory propositions are true. Indeed, it would be impossible to move such a man, for his scepticism consists in considering every argument and never deciding upon its validity; he would, therefore, act in this way in reference to the arguments brought against him.

...I will not allow books to prove any thing." "But how shall we prove any thing?" "We never shall.

Not to know of what things one should demand demonstration, and of what one should not, argues want of education.

Ask yourself whether you have earned the right to have an opinion. Opinions are easy to produce, so bad ones abound. Knowing that you don't know something is nearly as valuable as knowing it. The worst situation is thinking you know something when you don't.