The word “integrity” is derived from the Latin word integritas, which means unharmed, intact, or complete. Integrity is an ethical requirement of philosophical humanism for “as far as possible” congruence between one’s ideals and values and one’s actual actions. According to the Duden dictionary, integrity means impeccability, blamelessness, and incorruptibility. Straightforwardness or probity are often used as synonyms for integrity. According to Wikipedia, “a person with integrity (lives and acts) in the awareness that his or her personal beliefs, standards, and values are expressed in his or her behavior. Personal integrity has been characterized as fidelity to oneself. However, it equally respects the integrity and dignity of fellow human beings and strives not to violate them.”
In popular parlance, integrity is explained in terms of the following sentence:
“Integrity means doing the right thing—even when no one is watching”.