Isaac Newton · every age

What was Isaac Newton doing at 60?

Invented calculus and gravity theory in a plague year at 23

1. Nov 1703

   President of the Royal Society, a post he held until death

   He was 60 and ran the Society for the next 24 years.

   Source: en.wikipedia.org

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