TRENT UNIVERSITY DURHAM DEPARTMENT OF SOCIOLOGY DISCOVERING SOCIAL THEORY – SOCI 2110H Fall 2019 Assignment Handout. Answer the following essay question: 2) Karl Marx in The Manifesto of the Communist Party said “All that is solid melts into Air.” Friedrich Nietzsche, in Beyond Good and Evil, offered the following aphorism (#108): “There are no moral phenomena at all, only a moral interpretation of phenomena.” Drawing upon the theoretical perspectives of each thinker, compare and contrast these sayings as representations of life in modern society.