Quotes from The Principia: Mathematical Principles of Natural Philosophy

“This most beautiful system [The Universe] could only proceed from the dominion of an intelligent and powerful Being.”
― Isaac Newton, quote from The Principia: Mathematical Principles of Natural Philosophy

“Kepler's laws, although not rigidly true, are sufficiently near to the truth to have led to the discovery of the law of attraction of the bodies of the solar system. The deviation from complete accuracy is due to the facts, that the planets are not of inappreciable mass, that, in consequence, they disturb each other's orbits about the Sun, and, by their action on the Sun itself, cause the periodic time of each to be shorter than if the Sun were a fixed body, in the subduplicate ratio of the mass of the Sun to the sum of the masses of the Sun and Planet; these errors are appreciable although very small, since the mass of the largest of the planets, Jupiter, is less than 1/1000th of the Sun's mass.”
― Isaac Newton, quote from The Principia: Mathematical Principles of Natural Philosophy

“Resistance is usually ascribed to bodies at rest, and impulse to those in motion; but motion and rest, as commonly conceived, are only relatively distinguished; nor are those bodies always truly at rest, which commonly are taken to be so.”
― Isaac Newton, quote from The Principia: Mathematical Principles of Natural Philosophy

“This most beautiful system of the sun, planets, and comets, could only proceed from the counsel and dominion of an intelligent and powerful Being. And if the fixed stars are the centers of other like systems, these, being formed by the like wise counsel, must be all subject to the dominion of One.”
― Isaac Newton, quote from The Principia: Mathematical Principles of Natural Philosophy

“the one as much as it advances that of the other. If a body impinge upon another, and by its force change the motion of the other, that body also (because of the equality of the mutual pressure) will undergo an equal change, in its own motion, towards the contrary part.”
― Isaac Newton, quote from The Principia: Mathematical Principles of Natural Philosophy

“Hypotheses non fingo (Latin for "I feign no hypotheses", "I frame no hypotheses", or "I contrive no hypotheses")”
― Isaac Newton, quote from The Principia: Mathematical Principles of Natural Philosophy

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“The people thrown into other cultures go through something of the anguish of the butterfly, whose body must disintegrate and reform more than once in its life cycle. In her novel “Regeneration,” Pat Barker writes of a doctor who “knew only too well how often the early stages of change or cure may mimic deterioration. Cut a chrysalis open, and you will find a rotting caterpillar. What you will never find is that mythical creature, half caterpillar, half butterfly, a fit emblem of the human soul, for those whose cat of mind leads them to seek such emblems. No, the process of transformation consists almost entirely of decay.” But the butterfly is so fit an emblem of the human soul that its name in Greek is “psyche,” the word for soul. We have not much language to appreciate this phase of decay, this withdrawal, this era of ending that must precede beginning. Nor of the violence of the metamorphosis, which is often spoken of as though it were as graceful as a flower blooming.”
― Rebecca Solnit, quote from A Field Guide to Getting Lost

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― Willa Cather, quote from Lucy Gayheart

“My dearest Aurora, Your destiny is not as far off as you think. After all, you were named after the goddess of morning— a new dawn is what you are. You will bring change to many a life.”
― Candace Knoebel, quote from Born in Flames

“It’s so peaceful. I could go to sleep in here.” His eyes flickered to me once more, and for a dizzying second I wasn’t thinking about sleep or storms but about pressing my lips to his. I gave my head a slight shake and tried to slow my pulse”
― J.M. Richards, quote from Tall, Dark Streak of Lightning

“Sanırım iki insanın hem gülmesi hem sevişmesi, güldükleri için sevişmeleri ve seviştikleri için gülmeleri pek az rastlanır bir durumdur. Sevmek ve gülmek hep aynı yerden gelir de, o noktaya pek çok kişi erişemez.”
― James Baldwin, quote from If Beale Street Could Talk

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About BookQuoters

BookQuoters is a community of passionate readers who enjoy sharing the most meaningful, memorable and interesting quotes from great books. As the world communicates more and more via texts, memes and sound bytes, short but profound quotes from books have become more relevant and important. For some of us a quote becomes a mantra, a goal or a philosophy by which we live. For all of us, quotes are a great way to remember a book and to carry with us the author’s best ideas.

We thoughtfully gather quotes from our favorite books, both classic and current, and choose the ones that are most thought-provoking. Each quote represents a book that is interesting, well written and has potential to enhance the reader’s life. We also accept submissions from our visitors and will select the quotes we feel are most appealing to the BookQuoters community.

Founded in 2023, BookQuoters has quickly become a large and vibrant community of people who share an affinity for books. Books are seen by some as a throwback to a previous world; conversely, gleaning the main ideas of a book via a quote or a quick summary is typical of the Information Age but is a habit disdained by some diehard readers. We feel that we have the best of both worlds at BookQuoters; we read books cover-to-cover but offer you some of the highlights. We hope you’ll join us.