Guilt is an attitude when one expects the loss of love.
Guilt is also called remorse. As well a sense of responsibility is a variation of guilt.
Guilt is an emotion derived from expecting to feel sad.
Guilt is felt when people feel that they betrayed the expectation of a person who they love. Religious guilt is also felt when people feel that they betrayed the expectation of the existence which they call God.
At these times it is the expectations of a person who they love that is betrayed, not the expectations of a person who loves them, so guilt doesn't need mutual love.
Also, since guilt is unpleasant it has the effect of suppressing actions that threaten society, such as crimes.
Guilt occurs when people reject a person because of his or her actions. For example, when a person was a child and did something bad his or her mother might have said, "Any child who does such things is not my child, get out of here!" These experiences become fixed memories, so people also feel guilty when a situation reappears in which their actions are similar to those that lead to rejection from others.
To avoid losing an object of love, guilt causes you to change yourself and jealousy causes you to change others.
A person who doesn't feel guilt is troublesome, but a person who easily feels guilt is gloomy. It is impossible to keep changing oneself for others. We can assume that an introverted person easily feels guilt, and an extroverted person easily feels jealous.
If a child cannot learn to love or trust others while growing up, there is a danger of the child not feeling guilt even after they have grown up. A person who doesn't love anyone won't feel guilt, so that person betrays or deceives others without a second thought. A solitary person who has a tenuous relationship with others easily commits a crime because he or she does not easily feel guilty about his or her behavior.
Criminals sometimes have domestic problems. They don't know love so they don't have a resistance to losing it, and as a result they have this brake against committing crimes. To rehabilitate criminals we must be kind to them to teach them love ―― can we really do this though?
Naturally there is a type who receives plenty of love but ends up spoiled so they lack guilt. Even if we give love to this type of person, there is no effect.
The key to separating these two types is to check the person's sensitivity to jealousy. In the former type jealousy is weak, but the later become extremely jealous.
People feel guilty not only when they actually betray a person who they love, but also when they expect that they will betray the expectations of a person they love. Generally we call this a sense of responsibility. In this case people's behaviors are usually acts of love, that is to say acts in which they help others, so it is a positive feeling, which is contrary to guilt.
Guilt is not necessarily born from crimes. People feel guilty when they commit crimes because the person who they love doesn't approve of crimes. The reason people feel guilty if they murder someone but not if they kill someone in a war is because it is approved of by a person who they love.