In my ethics class we recently discusses Hobbes' system of ethics. Mainly his view on the State of Nature and the consequences.
Essentially, Hobbes believes that without a sovereign in power to keep the people in check, then people will live in anticipation. Due to scarcity of resources, competition, and general paranoia, peoples' lives will be "brutish, nasty, and short."
Hobbes goes on to say that people should submit to a sovereign that has the power to force people to comply to a social 'contract.' He essentially states that people should be moral for their own benefit. My teacher sums up Hobbes' morality as "enlightened self-interest." It would be better, according to Hobbes, to act morally and not have to fear for your life, etc...
So, the question:
If there were NO reason to be moral (ie no enforcing power), would YOU be moral? As an example, think of the Ring of Gyges story - basically states that if you were to be able to wear an invisibility cloak, and therefore not be held accountable for your actions - would you submit to ethics and morals, or would you steal, etc?
...Or any other discussion in the field of ethics!