 At the same time, Brouwer was well aware of the practical need for language, both in order to communicate mathematical results to others and to help ourselves in remembering and reconstructing our previous results (Brouwer 1907: 169 [1975: 92]). Only an ideal mathematician with perfect and unlimited memory would be able to practice pure mathematics without recourse to language (Brouwer 1933A2: 58 [van Stigt 1990: 427]). Clearly, given these two practical functions of language, the more precise the language is, the better.