In article <firstname.lastname@example.org>, email@example.com wrote:
> On Sunday, 16 June 2013 21:16:06 UTC+2, Virgil wrote: > > Since WM apparently claims to be able to define everything, what words will > > he use in his very first definition, before he has defined any words? > > The definitions are based upon the knowledge already acquired in school.
In other words, all formal definitions are ultimately based on things which are not formally defined at all. --