precept, rule, rationale, maxim, fundamental, tenet, concept, theory, axiom, doctrine, more...

vice, corruption, dishonesty, deceit, unscrupulousness

moral principle, ethical principle, legal principle, religious principle, more...

same, general, fundamental, basic, first, moral, important, active, second, vital, underlying

fundamental truth,   core value,   core concept,   guiding force,   personal value,   basic concept,   what you stand for,   general truth,   ocham's razor,   guiding maxim