As with all periods, there is a wide drift of dates, reasons for categorization and boundaries. In particular, the Renaissance, more than later periods, is thought to begin in Italy with the Italian Renaissance and roll through Europe. The English Renaissance is often thought to include Shakespeare, at a time when Italy had passed through Mannerism and to the Baroque. As importantly the 16th century is split differently (see lumpers and splitters). Some historians see the Reformation and Counter-Reformation as being separated from the Renaissance and more important for philosophy, while others see the entire era as one sweeping period.