Foreshadowings of the principles and even of the language of [the infinitesimal] calculus can be found in the writings of Napier, Kepler, Cavalieri, Pascal, Fermat, Wallis, and Barrow. It was Newton’s good luck to come at a time when everything was ripe for the discovery, and his ability enabled him to construct almost at once a complete calculus.
![Foreshadowings of the principles and even of the language of [the infinitesimal] Image](https://www.idlehearts.com/images/foreshadowings-of-the-principles-and-even-of-the-language-of-the-infinitesimal.jpg?x85372 "Foreshadowings of the principles and even of the language of [the infinitesimal]")
