Isaac Newton

Their life

In eighteen plague-year months on a farm, he invented calculus, decomposed light, and conceived universal gravitation — then spent decades perfecting the Principia, the single most influential scientific book ever written.

Known for

• Principia Mathematica
• Laws of motion
• Universal gravitation
• Calculus (with Leibniz)
• Decomposing light into color
• Master of the Royal Mint

The road they walked

Isaac Newton was born in the manor house at Woolsthorpe, Lincolnshire, on Christmas Day 1642 by the old calendar — a sickly, premature infant not expected to survive the week, born three months after his father's death. His mother remarried when he was three and left him with his grandmother, an early separation he seems never to have fully forgiven. He entered Trinity College, Cambridge, in 1661 as a subsizar, paying his way by waiting on wealthier students, an unremarkable undergraduate by the university's own account of him.

He came of age in a England still shaking off civil war and regicide, newly restored under Charles II, where Cambridge's official curriculum remained largely Aristotelian even as a scientific revolution was already underway on the Continent and in London's new Royal Society, founded in 1660. Newton educated himself past his tutors, filling notebooks with Descartes, Galileo, and Kepler read on his own initiative. When plague closed the university in 1665 and sent him home to Woolsthorpe for those famous eighteen months, he was less a prodigy discovered than a young man finally given uninterrupted room to think.

He returned to Cambridge in 1667, was elected a fellow, and in 1669 succeeded his own teacher Isaac Barrow as Lucasian Professor of Mathematics — a chair he would hold for decades. A reflecting telescope of his own design won him early notice from the Royal Society, but his paper on light and color drew him into a bruising, years-long dispute with Robert Hooke, one of several rivalries — including a bitter priority fight with Gottfried Leibniz over calculus — that shadowed his career. It took Edmond Halley's visit in 1684, asking what shape a planet's orbit would take under an inverse-square force, to pull Newton's private calculations into public form; three years later the Principia appeared, and with it a new architecture for the physical universe. Later life turned outward: he served as Warden and then Master of the Royal Mint, president of the Royal Society, and was knighted in 1705, all while pursuing private, largely unpublished work in alchemy and unorthodox biblical chronology that his contemporaries never saw.

How their story ended

Newton died in London in March 1727, at eighty-four, and was buried in Westminster Abbey — the first scientist given that honor. He had remained active almost to the end, overseeing later editions of the Principia and presiding over the Royal Society and the Mint into his final years. The immediate cause of death was long attributed to kidney stones, though some historians have pointed to mercury poisoning from his decades of alchemical experiments as a contributing factor; the record doesn't settle the question cleanly. What is certain is that he died wealthy, famous, and largely without rival, having outlived most of the controversies that once threatened to define him.

In their words

We attribute every quotation to the person we believe said it, and cite the source where we can place it. If you spot a misattribution or a factual error, please tell us — we will check it and correct the record.

Tables where Isaac sits

The Observatory

For rigorous discovery — evidence over authority, always.

From the Journal