+ There is such a thing as human well-being and that there are definite ways to increase or decrease it.

+ We should act such that our actions produce a general increase in human well-being.

+ There is not only one way to achieve this goal, there are many correct answers.

+ The most parsimonious way to increase human well-being is to increase the overall liberty of everybody. In other words, “doing whatever you want so long as it doesn’t adversely affect others” is a good rule-of-thumb way to approach the world.