The purity of mathematics had a special place in Kurt's heart, and its ability to express otherwise inexpressible truth held profound meaning for him. Language, Kurt felt, is by its nature imperfect; "If we are to have the words mean anything in the languages we use, or the symbols to have a conventional utility (upaya)--spoken languages, formal languages---all of them are algebras, or systems of the relationship between constants and variables." For the math lovers out there, enjoy.
