What do you think are the best aspects of your belief systems, or the way you approach the world?

This can be a religion, an adherence to the scientific method, secular humanism, a personal principle not to assume anything about someone, etc.

Please (1) identify the system that you’re talking about, and (2) what the good things about it are.

Quips are welcome, but criticizing any other system should be considered seriously off topic (we’re looking for the best, not people showing their worst. ;-))