Francis Crick Quotes

Scientific criticism has no nobler task than to shatter false beliefs.

Finding that no religion is based on facts and cannot be true, I began to reflect what must be the condition of mankind trained from infancy to believe in error.

Marxism, Freudianism, global warming. These are proof - of which history offers so many examples - that people can be suckers on a grand scale. To their fanatical followers they are a substitute for religion. Global warming, in particular, is a creed, a faith, a dogma that has little to do with science.

I am something of a contrarian, I suppose. I feel less comfortable when everybody agrees with me. I say, 'I better reexamine my position!' I probably believe that the worst opinions in my court have been unanimous. Because there's nobody on the other side pointing out all the flaws.

It's really important, whether you're a conservative or a liberal, to always challenge the conventional wisdom, which is what I've tried to do in all my work.

It's sad that we never get trained to leave assumptions behind.

When a man fails to see the truth of certain generally accepted views, there is no law compelling him to provoke animosity by announcing his dissent.

People everywhere enjoy believing things that they know are not true. It spares them the ordeal of thinking for themselves and taking responsibility for what they know.

I don't think that anyone should think for you. And that's exactly what cults do. All cults, including Scientology, say, "I am your mind, I am your brain. I've done all the work for you, I've laid the path open for you. All you have to do is turn your mind off and walk down the path I have created.

During the Middle Ages there were all kinds of crazy ideas, such as that a piece of rhinoceros horn would increase potency. Then a method was discovered for separating the ideas - which was to try one to see if it worked, and if it didn't work, to eliminate it. This method became organized, of course, into science.

He, who knows how to distinguish between true and false, must have an adequate idea of true and false.

Science is expanding, and with it our vision of the universe. although this new and constantly changing view may not always give us comfort, it does have the virtue of truth according to our most effective resources for acquiring knowledge. No philosophy, moral outlook, or religion can be inconsistent with the findings of science and hope to endure among educated people.

We all make basic assumptions about things in life, but sometimes those assumptions are WRONG. We must never trust in what we assume, only in what we KNOW.

Unless our ideas are questioned, they become part of the furniture of eternity.

It is people who are violent, rather than "religions"; and since we secularised our politics we have had two major world wars, the Holocaust, the Soviet Gulag, and the atomic attacks on Hiroshima and Nagasaki - none of which were inspired by religion. If we want to understand the dangers of our world, we can no longer accept the old received ideas.

An ability to embrace new ideas, routinely challenge old ones, and live with paradox will be the effective leader's premier trait.

An unexamined idea, to paraphrase Socrates, is not worth having and a society whose ideas are never explored for possible error may eventually find its foundations insecure.

Most of the great works of juvenile literature are subversive in one way or another: they express ideas and emotions not generally approved of or even recognized at the time; they make fun of honored figures and piously held beliefs; and they view social pretenses with clear-eyed directness, remarking - as in Andersen's famous tale - that the emperor has no clothes.

In practice, the goal of skepticism is not the discovery of truth, but the exposure of other people's errors. It plays a useful role in science, religion, scholarship, and common sense. But we need to remember that it is a weapon serving belief or self-interest; we need to be skeptical of skeptics. The more militant the skeptic, the stronger the belief.

The hardest part about gaining any new idea is sweeping out the false idea occupying that niche. As long as that niche is occupied, evidence and proof and logical demonstration get nowhere. But once the niche is emptied of the wrong idea that has been filling it:; once you can honestly say, "I don't know", then it becomes possible to get at the truth.

In view of the tide of religiosity engulfing a once secular republic it is refreshing to be reminded by Freethinkers that free thought and skepticism are robustly in the American tradition. After all the Founding Fathers began by omitting God from the American Constitution.

It is impossible to devise an experiment without a preconceived idea; devising an experiment, we said, is putting a question; we never conceive a question without an idea which invites an answer. I consider it, therefore, an absolute principle that experiments must always be devised in view of a preconceived idea, no matter if the idea be not very clear nor very well defined.

In my view, the argument from parsimony is really no argument at all - it typically functions only to shut down more interesting discussion. If history is any guide, it's never a good idea to assume that a scientific problem is cornered.

A thing is not proved just because no one has ever questioned it. What has never been gone into impartially has never been properly gone into. Hence scepticism is the first step toward truth. It must be applied generally, because it is the touchstone.

It is better to have no ideas than false ones.