British mathematician, logician, philosopher, & public intellectual Bertrand Russell was born #OTD in 1872.
One of Russell's most significant achievements is the co-authorship of "Principia Mathematica" (1910-1913) with Alfred North Whitehead. His works, such as "The Problems of Philosophy" (1912) & "Our Knowledge of the External World" (1914), explored issues related to knowledge, perception, & the scientific method.
He is best known for his classic plays, particularly "The Barber of Seville" and "The Marriage of Figaro," which form part of the Figaro trilogy. These works were adapted into famous operas by Gioachino Rossini and Wolfgang Amadeus Mozart respectively.