<prompt> Translate the following text to EnglishMara baada ya kukubali axiom - na yeye alikuwa tena tayari kutilia shaka hapa - angeweza kufuata kitabu bora zaidi kuliko yeye alikuwa na uwezo wa kufuata kozi yake mwenyewe katika semantics.  <response>: Once he accepted the axiom--and he was no longer prepared to doubt it here--he could follow the book far better than hed been able to follow his own course in semantics. 