Daniel Gregory Mason,
From Grieg to Brahms: Studies of Some Modern Composers and Their Art
“ But even more striking than the clearness of his harmony is the trenchant perspicuity of his rhythm. The sense of rhythm is perhaps the prime criterion of intellectuality in a composer. For just as determinations of accent and measure, such as occur in the dances of the most primeval savages, were undoubtedly the earliest means of formulating the cries and wails of emotion which underlie all musical expression, so throughout musical history rhythm has been the chief formative or rationalizing agent, and a vivid sense of it has always characterized the more intellectual musicians. ”
