Ludwig Josef Johann Wittgenstein (26 April 1889 – 29 April 1951) was an Austrian philosopher. His work the philosophy of language and the philosophy of mind are important ideas in The Broom of the System.
Wittgenstein is also included in The Broom of the System as an "off-screen" character who taught Lenore Beadsman at Cambridge. Lenore would eventually pass on many of the theories and lessons about language and reality to her great-granddaughter.