At 18 , Dante met Guido Cavalcanti , Lapo Gianni , Cino da Pistoia , and soon after Brunetto Latini ; together they became the leaders of Dolce Stil Novo ( `` The Sweet New Style '' ) . At 18 , Dante met Guido Cavalcanti , Lapo Gianni , Cino da Pistoia and soon after Brunetto Latini ; together they became the leaders of the Dolce Stil Novo .