Although Sigmund Freud and Ludwig Wittgenstein likely never met in person, a number of significant connections link their lives and thought. Wittgenstein refers to Freud and his intellectual world on several occasions in his philosophical writings. Furthermore, individuals close to Wittgenstein – including his sister, Margaret Stonborough, and his friend, Frank Ramsey – underwent psychoanalytic treatment in Vienna. Margaret Stonborough also played a crucial role in securing Freud’s safe passage to England in 1938.

Source: Harcourt, E. (2017). Wittgenstein and Psychoanalysis. In H. J. Glock & J. Hyman (Eds.), A Companion to Wittgenstein (S. 651-666). Wiley.