  Kripke's Schema (better the Brouwer-Kripke Schema) and the Kreisel-Troelstra
Theory of the Creating Subject were introduced around the same time for the
same purpose, that of analysing Brouwer's 'Creating Subject arguments'; other
applications have been found since. I first look in detail at a representative
choice of Brouwer's arguments. Then I discuss the original use of the Schema
and the Theory, their justification from a Brouwerian perspective, and
instances of the Schema that can in fact be found in Brouwer's own writings.
Finally, I defend the Schema and the Theory against a number of objections that
have been made.
