In similar terms, Voltaire wrote in his Essay on Epic Poetry (1727), "Sir Isaac Newton walking in his gardens, had the first thought of his system of gravitation, upon seeing an apple falling from a tree."
” 相似的说法还出现在伏尔泰的著述《Essay on Epic Poetry》（1727）中：“艾萨克·牛顿爵士在他的花园里散步，首次想到了他的引力体系，接着便看见一颗苹果从树上掉下。