Before revision: But it was not until the beginning of the quattrocento ( fifteenth century) that the studia humanitatis began to be associated with particular academic disciplines, when Pier Paolo Vergerio, in his De ingenuis moribus, stressed the importance of rhetoric, history, and moral philosophy as a means of moral improvement.
After revision: But it was not until the beginning of the quattrocento ( 15th century) that the studia humanitatis began to be associated with particular academic disciplines, when Pier Paolo Vergerio, in his De ingenuis moribus, stressed the importance of rhetoric, history, and moral philosophy as a means of moral improvement.