Ethics - described briefly as the norms by which acceptable and unacceptable behaviors are measured—has been the concern, and perhaps the great dilemma, of sentient humans since Socrates subjected it to philosophical inquiry almost 2500 years ago. Socrates believed, without universal acceptance, that the most pertinent issues people must deal with are related to how we live our lives, what actions are and are not righteous, and how people should live together peacefully and harmoniously. A vast parade of philosophers, religious leaders, politicians, professors, and self-help gurus have followed Socrates' lead through the ensuing centuries; it's a popular and enduring subject, perhaps because it is so complex, intriguing, and pervasive in every facet of our lives.