@DasTrnegras,
"For example, the Definition of truth. It is
observed what can be called truth in almost all situations. Any philosopher needs to just observe the method we use to determine the truth of a statement."
I am not sure how far one can push the analogy between the observation of physical objects and the observation of ethical "objects" without turning ethics into an anthropology.
In ethics, what we observe is at least two elements: the action of individuals, their reported ethical reason for taking a particular action rather than another (or no action at all). But doesn't ethics need a further step by attempting to determine whether the action was taken in good faith and whether the reason(s) for it were "sound"?
Now if a philosopher observes the method used to determine the truth of a statement (or ethical) action, doesn't he find that we normally employ different methods in different ethical situations? But, at the same time, does not the philosopher attempt to determine, from outside as it were, whether the rules and methods supposedly used are "correct" or the action "right"?
Historically we have seen the most atrocious acts committed for the strongest moral reasons. Now would not we rather call
these moral reasons deceptions, and not our condemnation of them?