Famous Quotes & Sayings

Richard P. Feynman

I can live with doubt and uncertainty and not knowing. I think it is much more interesting to live not knowing than to have answers that might be wrong. If we will only allow that, as we progress, we remain unsure, we will leave opportunities for alternatives. We will not become enthusiastic for the fact, the knowledge, the absolute truth of the day, but remain always uncertain … In order to make progress, one must leave the door to the unknown ajar.

Richard P. Feynman

Unless a thing can be defined by measurement, it has no place in a theory. And since an accurate value of the momentum of a localized particle cannot be defined by measurement it therefore has no place in the theory.

Richard P. Feynman

It is odd, but on the infrequent occasions when I have been called upon in a formal place to play the bongo drums, the introducer never seems to find it necessary to mention that I also do theoretical physics.

Richard P. Feynman

Science is a way to teach how something gets to be known, what is not known, to what extent things are known (for nothing is known absolutely), how to handle doubt and uncertainty, what the rules of evidence are, how to think about things so that judgments can be made, how to distinguish truth from fraud, and from show.

Richard P. Feynman

Scientists are explorers. Philosophers are tourists.

Richard P. Feynman

The difficulty really is psychological and exists in the perpetual torment that results from your saying to yourself, "But how can it be like that?" which is a reflection of uncontrolled but utterly vain desire to see it in terms of something familiar. ... If you will simply admit that maybe [Nature] does behave like this, you will find her a delightful, entrancing thing. Do not keep saying to yourself, if you can possible avoid it, "But how can it be like that?" because you will get 'down the drain', into a blind alley from which nobody has escaped. Nobody knows how it can be like that.

Richard P. Feynman

If you thought that science was certain - well, that is just an error on your part.

Richard Dawkins

Cheetah genes cooperate with cheetah genes but not with camel genes, and vice versa. This is not because cheetah genes, even in the most poetic sense, see any virtue in the preservation of the cheetah species. They are not working to save the cheetah from extinction like some molecular World Wildlife Fund.

Richard Whately

To teach one who has no curiosity to learn, is to sow a field without ploughing it.

Richard D. James

My filing system's really crap because I can never decide whether to sort things by studio, or year, or where I lived.

Richard D. James

I've always got to change something. All the tracks I've done in the last five years were made in like six different studios. It gets a bit complicated.

Robbie Coltraine

Once you've been doing anything for twenty-five years people start to notice you.

Rob Sheffield

Not being able to protect her from things was the most frightening thing I'd ever felt, and it kicked in as soon as we got together. With every year we spent together, I became more conscious that I now had an infinitely expanding number of reasons to be afraid. I had something to lose.

Rob Chapman

The way I have progressed as a writer over the years is to try and stay true to the principles I absorbed.

Rob Halford

They were and still are a groundbreaking band. Even though they haven't released any new music in ages, you can put on the first Black Sabbath album and it still sounds as fresh today as it did 30-odd years ago. And that's because great music has a timeless ability: To me, Sabbath are in the same league as the Beatles or Mozart. They're on the leading edge of something extraordinary.

Richard P. Feynman

If the professors of English will complain to me that the students who come to the universities, after all those years of study, still cannot spell 'friend,' I say to them that something's the matter with the way you spell friend.

Richard Dawkins

All qualified physicists, biologists, cosmologists and geologists agree, on the basis of massive, mutually corroborating evidence, that the earth's age is at least four billion years.

Russell Baker

Few expected very much of Franklin Roosevelt on Inauguration Day in 1933. Like Barack Obama seventy-six years later, he was succeeding a failed Republican president, and Americans had voted for change. What that change might be Roosevelt never clearly said, probably because he himself didn't know.

Luc de Clapiers

Our opinion of others is not so variable as our opinion of ourselves.

James F. Cooper

Many words are in a state of mutation, the pronunciation being unsettled even in the best society, a result that must often arise where language is as variable and undetermined as the English.

Garrett Hardin

Every measured thing is part of a web of variables more richly interconnected than we know.

Alan Perlis

There is no such thing as a free variable.

Robert A. Heinlein

In a dilemma, it is helpful to change any variable, then reexamine the problem.