What are 2 differences between a classical and a renaissance?

Jan 9, 2015 - Answer by Kaiser Kuo, dabbler in history: The Renaissance was a cultural ... with classical(that is, Greco-Roman) learning and culture, much of ...

Classical is relating to ancient Greek or Latin literature, art or culture.
 Renaissance is the cultural rebirth.

The linear perspective changed the quality of art because it gave art a sense of reality. it gave the illusion that the background and surroundings were actually close and/or far and a sense of depth. linear perspective change the quality of art following its birth the renaissance period as they want the art to be more realistic and they believe one way to achieve it is to use the method of linear perspective. it uses the principle of math to realistically portray space and depth in art. 

He showed real human suffering rather than symbolism.