{ 1 } - If A and B are inconsistent and you believe A, then don't believe B.
{ 2 } - If you want to do E and believe that doing M is necessary to do E, then do M.
{ 3 } - If you aren't willing that everyone do A, then don't do A yourself.
{ 4 } - If act A would cause more pain than pleasure for human beings, then you ought not to do act A.

Formal ethical principles are ethical principles expressible using only variables and constants -- where the constants can include logical terms, terms for general psychological attitudes (like "believe," "desire," and "act"), and other fairly abstract notions (like "ought" and "ends-means").

The other three are examples of formal ethical principles.