We assume that our five senses are our best chance to accurately perceive reality, because no other reliable sources have been discovered to gather information about the world.
We believe that we seek things that make us happy because introspection about our thoughts and desires, and observations of others, are consistent with this perspective.
There is insufficient evidence for objective moral truth. On reflection, our views of right and wrong are inextricably linked to what sort of people we want to be, our past experiences, and the cultural norms of the times.
Ethical societies benefit everyone because it is easier to live a happier life when you are surrounded by other people who value cooperation and take pleasure in your happiness. This is a mutually beneficial relationship.
Beliefs are subject to revision because the more experiences you have in life, the more data you have to draw on, and the more likely you are to formulate accurate conclusions.
