Page:Memoirs of Sir Isaac Newton's life.djvu/120

 Sr. Iaac had all the qualifications for a philoopher the acumen, the patience, & the judgmt. necessary: at the ame time, he had a natural geometry able to urmount all difficultys. he neither began with Euclid, or uch like introductions but cd. demontrate on sight. & at 24 yrs of age had laid the foundation of his two great dicoverys, the principia philo. mathemat. & of his optics: & then had invented the wonderful method of infinite series, or fluxions.