Socrates of the Republic of Plato is usually working on dialogue with people who claim to be experts on ethical issues. By asking simple questions Socrates gradually revealed that these people were indeed very confused and did not really understand what they claim to be experts. Morality is a moral problem raised by the Republic of Plato. Socrates believes that Cephalus, Polemarchus and Thrasymachus respond to morality. When Socrates and Kefalls were wealthy old people talking about money, a moral problem emerged.
The morality of the master-slave is the central theme of Friedrich Nietzsche's work, especially the first article of "moral lineage". Nietzsche believes that there are two basic types of morality: "dominant morality" and "slave morality". Masters of pride and power of moral value, slavery morality appraises goodness, consideration, compassion. Unlike the morality of slavery, morality of ethics measures good or bad outcome behavior (ie classical virtue and vice, resultism) and the morality of a slave weighs the behavior of a good malicious image (Example: Christian's virtue and vice, Kant morality)
Master is the creator of morals; slaves use the morals of their slaves to respond to their morals. Unlike Master's morality (emotion), the morality of a slave is based on the revaluation of feelings, that is, the devaluation of master and slave. Since the moral of the Lord began with a strong man, the morality of a slave began with the weak. Since the morality of slavery is a response to oppression, it will destroy oppressors. The morality of slavery is the opposite of the master's morality. Therefore, it is characterized by pessimism and sneer. The emergence of slave morality go against the "good" of the master's moral values.
Nietzsche believes that there are two types of morality. Active morality that actively appears from "nobility" and slave morality developing reactively in the weak. These two ethics do not show a simple reversal of each other. Moral ethics incorporates action into the "good" or "bad" outcome, and the morality of slaves incorporates the behavior into the "good" or "bad" intent. To my surprise, he looked down on both, even if the first one was considerably less than the second one.