Introduction to Ethics and Major Branches

Aug 25, 2025

Overview

This lecture introduces the concept of ethics, exploring its definitions, distinctions from morality, and the major branches within ethical philosophy.

Introduction to Ethics

  • Ethics comes from the Greek word "ethos," meaning custom or character.
  • Ethics is a branch of philosophy that studies the rightness or wrongness of human actions.
  • The main goal of ethics is to use reason to seek the good and define right conduct and the good life.
  • There is no absolute, unchanging definition of ethics because it evolves with social, cultural, and political changes.

Historical Perspectives on Ethics

  • Greek tradition linked ethics to the concept of the good life and happiness.
  • Aristotle’s "Nicomachean Ethics" focuses on happiness and how it is attained.
  • The Judeo-Christian tradition emphasizes righteousness before God and the love of God and neighbor over the pursuit of happiness.

Ethics vs. Morality

  • Ethics is the theory or systematic study of the principles of right action and the greater good.
  • Morality refers to the actual practice of rightness or wrongness in actions.
  • Ethics is more about understanding and evaluating moral principles; morality is about prescribing and following those principles.
  • Morality aims to guide action by reason and considers all individuals' interests.

Major Branches of Ethics

  • Normative ethics sets standards or norms for right and wrong behavior and develops guidelines for how we should act.
    • Example: Kant’s theory that actions are morally right if done out of duty.
  • Meta-ethics examines the meanings and origins of ethical terms and concepts, asking questions like "What is good?" or "Why should I be moral?"
    • Example: Plato’s exploration of the reasons for being moral.
  • Applied ethics applies ethical theories to real-life moral problems (e.g., abortion, euthanasia) and provides guidance for specific situations.
    • Fields of applied ethics include business ethics, biomedical ethics, environmental ethics, and social ethics.

Practical Example: Types of Ethics

  • In a situation where a police officer must shoot a terrorist to save lives:
    • Deontological (normative) ethics might claim killing is always wrong.
    • Consequentialist (normative) ethics may justify the action to prevent more deaths.
    • Applied ethics analyzes the specific case to advise on the most ethical action.

Key Terms & Definitions

  • Ethics — the philosophical study of right and wrong conduct.
  • Morality — the practice and application of ethical principles.
  • Normative Ethics — prescribes standards for right and wrong behavior.
  • Meta-ethics — studies the meanings and origins of moral concepts.
  • Applied Ethics — uses ethical theories to solve real-world moral issues.

Action Items / Next Steps

  • Review differences between ethics, morality, and the three branches of ethics.
  • Prepare examples of moral dilemmas to analyze using each ethical branch.