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

Progress in science comes when experiments contradict theory.

Richard P. Feynman

The game I play is a very interesting one. It's imagination in a straightjacket, which is this: that it has to agree with the known laws of physics. ... It requires imagination to think of what's possible, and then it requires an analysis back, checking to see whether it fits, whether its allowed, according to what's known, okay?

Richard P. Feynman

You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird... So let's look at the bird and see what it's doing -- that's what counts.

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

We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.

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.

Jaclyn Smith

Kmart's as much a part of my history as 'Charlie's Angels.' Twenty-five years! It's not just a celebrity brand.

Tony Judt

You don't have to be Jewish to understand the history of Europe in the 20th century, but it helps.

Harry S Truman

The only thing new in this world is the history that you don't know

Dani Shapiro

I don't think it's possible to separate out the strands of a writer's history, circumstances, life events, and that writer's themes.

Lindsey Graham

What would you like history to say about you when it is all said and done,

Alec Reid

history will prove that this is the end of the IRA.

Alison Weir

History was a hobby for about, oh, 20 years before I got into print.

Leonard Teitelbaum

History indicates that less than 10 percent of the meat recalled over a time period such as this is actually returned,

Aleksandr Solzhenitsyn

History has in different questions laid out some tremendous turnabouts and curves.

Walter Cronkite

We're living in a state where no one can trust his telephone conversations, nor even his personal conversations in a room, in a bar or anywhere else.

Walt Kelly

Thank goodness modern convenience is a thing of the remote future.

Joseph B. Wirthlin

If we become ill, modern medicine can work healing miracles.

Roger Lempke

If we want to keep soldiers, we need to train them on modern equipment.

Cai Wu

In just over 100 years, the 'Southern Continent' has sprouted into a modern country.

John Buchanan Robinson

In brief, egoism in its modern interpretation, is the antithesis, not of altruism, but of idealism.

John Buchanan Robinson

There is no word more generally misinterpreted than the word egoism, in its modern sense.

Eric Allin Cornell

I was partly old-fashioned and partly modern.

Epictetus

You lose only the things you have