Definitions: (1) the knowledge, or feeling, of right and wrong; (2) the faculty, power, or principle of a person which decides on the morality of their actions; (3) the criticism of oneself by one’s own value-habits, personal positive ideals; (4) the compulsion to act with the intention of doing good 
See also: Upright

Derivation: Latin, com- “with” + scire “knowledge”

Quote: When will our conscience grow so tender that we will act to prevent human misery rather than avenge it? — Eleanor Roosevelt (1884-1962) Chairperson of the United Nations Commission on Human Rights

Observation: We use the measurement of personal positive ideals to criticize ourselves or others. In judging another, use their own standard of “personal positive ideals” rather than yours.