--- title: "1 Perfect balance Quotes By Steven Weinberg" description: "1 Perfect balance quotes by Steven Weinberg. Plus more from Steven Weinberg and more Perfect balance sayings from other authors." image: "https://sms4smile.com/quotes/i/27c/steven-weinberg-3159_perfect-balance_in-general-the-fact-that-gravitational-a_1296953.png" --- > [“In general the fact that gravitational and inertial forces are both proportional to the mass of the body on which they act but depend on no other property of the body makes it possible at any point in any gravitational…](https://sms4smile.com/quotes/steven-weinberg/in-general-the-fact-that-gravitational-and-inertial-forces-are-both/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) [Image](https://sms4smile.com/quotes/i/27c/steven-weinberg-3159_perfect-balance_in-general-the-fact-that-gravitational-a_1296953.png) ## More by Steven Weinberg > [On balance the moral influence of religion has been awful.](https://sms4smile.com/quotes/steven-weinberg/on-balance-the-moral-influence-of-religion-has-been-awful/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [“The apparent strengths of the forces in any field theory depend on two kinds of numerical parameter: the masses (if any) of the particles…](https://sms4smile.com/quotes/steven-weinberg/the-apparent-strengths-of-the-forces-in-any-field-theory-depend-on/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [“Many people do simply awful things out of sincere religious belief, not using religion as a cover the way that Saddam Hussein may have…](https://sms4smile.com/quotes/steven-weinberg/many-people-do-simply-awful-things-out-of-sincere-religious-belief/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [This is often the way it is in physics - our mistake is not that we take our theories too seriously, but that we…](https://sms4smile.com/quotes/steven-weinberg/this-is-often-the-way-it-is-in-physics-our-mistake-is-not-that-we/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [With or without religion, you would have good people doing good things and evil people doing evil things. But for good people to do…](https://sms4smile.com/quotes/steven-weinberg/with-or-without-religion-you-would-have-good-people-doing-good-things/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [I would say it's a lot easier to develop a decoy system than to develop the intercontinental ballistic missile itself. I would think that…](https://sms4smile.com/quotes/steven-weinberg/i-would-say-it-s-a-lot-easier-to-develop-a-decoy-system-than-to/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [Rational argument can be defeated by refusing to argue rationally.](https://sms4smile.com/quotes/steven-weinberg/rational-argument-can-be-defeated-by-refusing-to-argue-rationally/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [The universe is an enormous direct product of representations of symmetry groups.](https://sms4smile.com/quotes/steven-weinberg/the-universe-is-an-enormous-direct-product-of-representations-of/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [Its a consequence of the experience of science. As you learn more and more about the universe, you find you can understand more and…](https://sms4smile.com/quotes/steven-weinberg/its-a-consequence-of-the-experience-of-science-as-you-learn-more-and/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [Our job in physics is to see things simply, to understand a great many complicated phenomena in a unified way, in terms of a…](https://sms4smile.com/quotes/steven-weinberg/our-job-in-physics-is-to-see-things-simply-to-understand-a-great-many/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [“Plato and the neo-Platonists taught that the beauty we see in nature is a reflection of the beauty of the ultimate, the nous. For…](https://sms4smile.com/quotes/steven-weinberg/plato-and-the-neo-platonists-taught-that-the-beauty-we-see-in-nature/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [An expert is a person who avoids the small errors while sweeping on to the grand fallacy.](https://sms4smile.com/quotes/steven-weinberg/an-expert-is-a-person-who-avoids-the-small-errors-while-sweeping-on/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [If (the antiproton) had not been discovered, the foundations of physics really would have crumbled.](https://sms4smile.com/quotes/steven-weinberg/if-the-antiproton-had-not-been-discovered-the-foundations-of-physics/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [Even though I knew pretty early that I was going to be a scientist, it wasn't the science that interested me in science fiction;…](https://sms4smile.com/quotes/steven-weinberg/even-though-i-knew-pretty-early-that-i-was-going-to-be-a-scientist-it/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) > [If history is any guide at all, it seems to me to suggest that there is a final theory. In this century we have…](https://sms4smile.com/quotes/steven-weinberg/if-history-is-any-guide-at-all-it-seems-to-me-to-suggest-that-there/) [Steven Weinberg](https://sms4smile.com/quotes/author/steven-weinberg/) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "ItemList", "@id": "https://sms4smile.com/quotes/about/perfect-balance/steven-weinberg/#itemlist", "name": "1 Perfect balance Quotes By Steven Weinberg", "numberOfItems": 1, "itemListElement": [ { "@type": "ListItem", "position": 1, "item": { "@type": "Quotation", "text": "“In general the fact that gravitational and inertial forces are both proportional to the mass of the body on which they act but depend on no other property of the body makes it possible at any point in any gravitational field to identify a \"freely falling frame of reference\" in which neither gravitational nor inertial forces are felt because they are in perfect balance for all bodies. When we do feel gravitational or inertial forces it is because we are not in a freely falling frame. For example, on the earth's surface freely falling bodies accelerate toward the center of the earth at 32 feet per second per second, and we feel a gravitational force unless we happen to be accelerating downward at the same rate. Einstein made a logical jump and guessed that gravitational and inertial forces were at bottom the same thing. He called this the principle of equivalence of gravitation and inertia, or the equivalence principle for short. 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