philosophy any personal belief about how to live or how to deal with a situation; "self-indulgence was his only philosophy"; "my father's philosophy of child-rearing was to let mother do it"
probabilism -
a Roman Catholic system of casuistry that when expert opinions differ an actor can follow any solidly probable opinion that he wishes even though some different opinion might be more probable
casuistry moral philosophy based on the application of general ethical principles to resolve moral dilemmas