Ludwing Wittgenstein was a philosopher born in Austria in 1889. He was the author of the Tractatus Logico-Philosophicus, which is considered one of the most important works of philosophy in the 20th century. Frank Ramsey was a mathematician and philosopher born in England in 1903. He was a student of Wittgenstein and was a major influence on his work.
The Extraordinary Mind of Frank Ramsey: A Quiz on the Renowned Mathematician, Philosopher, and Economist