Answer:
Classicism and romanticism are opposites. A good summation of romanticism can be found at http://www.readwritethink.org/files/resources/lesson_images/lesson1142/CharacteristicsRomanticism.pdf
Romanticism is characterized by a high confidence in mankind. Classicism is more pessimistic about man's ability to change himself and society for the better. Romanticism is more interested in low-life people. Classicism is more interested in powerful, intelligent, and charismatic people in high places.
Some classicist thinking examples are: rule by Kings, the Bible, King Lear, the Homeric legends, traditional churches,
Some romantic thinking examples are: rule by democracies or republics, Pretty Woman, Never on Sunday, Summerhill. paganism, the environmental movement, the ambition of human intellectuals to rationalize all aspects of life.
As human events drive things along, some elements that were once on the list of romantic ideals will require shifting to the classicist category. For example, a couple of centuries ago the idea of a people being self-ruled would have been considered very romantic, but now it is becoming less clear that such a characterization is correct. In fact, you can use the U.S. political parties to define a line between romantic and classicist by saying that Democrats are romantics and Republicans are classicists. This statement is relatively true, although 200 years ago both of them would have belonged in the romanticist category.