It is the little spark of celestial fire that makes known to you the presence of the Indweller, the author of the divine laws of truth and holiness. It raises the voice in protest whenever anything is thought of or done contrary to the interest of its Master. Conscience is the voice of the Self which says 'yes' or 'no' when you are involved in a moral struggle. It is a call from within to do an act or to avoid it. Conscience is the internal monitor.
Conscience is a form of truth which is the knowledge of our own acts and feelings as right or wrong.
It is a guiding voice from within, the faculty or principle by which we distinguish right from wrong. This sense of duty is conscience. Scrupulousness is conscience. Conscience is a silent teacher. Conscience is a moral faculty.