In man there is" personality "and"essence".Personality is something that is acquired in the process of life.And the essence is what we are born with,our true,spiritual "I"...From the point of view of the person can not steal, because there will be a punishment.The essence intuitively knows to take someone else's unacceptable from a moral standpoint.In General, the word "conscience "comes from"news", that is"Vedas" (translated from Sanskrit-knowledge).It is a complicity in some global law.
Believers interpret conscience as the inner voice of God.Atheists explain everything rationally:our cellular memory stores information of many generations,and everything that helps society to survive is recorded in it.These are prohibitions on murder and theft,as well as higher moral dogmas,such as "good is better than evil".The innate conscience provides survival not so much to the individual as to humanity as a species.It regulates relations in society,allows a person to form their own ethics.
And with this ability-to take responsibility for themselves,to subject their actions to internal censorship.