Isaac Newton · every age

What was Isaac Newton doing at 22?

Invented calculus and gravity theory in a plague year at 23

1. Aug 1665

   Took his BA, then went home as plague closed Cambridge

   The next two years at Woolsthorpe became his 'miracle years': calculus, optics and gravitation all took shape there.

   Source: en.wikipedia.org

Portrait: Portrait: Godfrey Kneller (1689), public domain, via Wikimedia Commons · source