 The problem of an epistemology of style can perhaps be roughly put as follows. Are the stylistic elements present in mathematical discourse devoid of cognitive value and so only part of the coloring of mathematical discourse or can they be seen as more intimately related to its cognitive content? The notion of coloring here comes from Frege who distinguished in “The thought” between the truth condition of a statement and those aspects of the statement which might provide information about the state of mind of the speaker or hearer but do not contribute to its truth conditions. In natural language, typical elements of coloring are expressions of regret such as “unfortunately”. “Unfortunately, it’s snowing” has the same truth conditions as “it’s snowing” and “unfortunately”, in the first sentence, is only part of the coloring. Jacques and Monique Dubucs have generalized this distinction to proofs in “La couleur des preuves” (Dubucs and Dubucs 1994) where they deal with the problem of a ‘rhetoric of mathematics’, a problem quite close to that of an analysis of style. Dubbing traditional rhetoric as ‘residualist’, for it takes into account only phenomena of non-cognitive significance such as ornamentation etc. of the mathematical text but leaves the object (such as the content of a demonstration) untouched, they explored the options for a more ambitious “rhetoric of mathematics”.