ХЛЕБСОЛЬ ЕШЬ, А ПРАВДУ РЕЖЬ
Your conscience will be clear is you tell the truth, especially in circumstances when there seems to be a strong temptation not to do so. See Доброе дело - правду говорить смело (Д), Лучше горькая правда, чем красивая ложь (Л) Cf: Speak the truth and shame the devil (Am., Br.). Speak the truth bravely, cost as it may; hiding the wrong act is not the way (Am.). Tell it like it is (Am.). Tell the truth and shame the devil (Am., Br.). The truth shall set you free (Am.)