A more thorough explanation:

MENS LEGIS

Mens legis is a Latin term that means "the mind of the law". It refers to the spirit or purpose of a law.

For example, the mens legis behind a law that prohibits driving under the influence of alcohol is to prevent accidents and protect public safety. The mens legis behind a law that requires employers to provide a safe working environment is to protect workers from harm.

Another example is the mens legis behind a law that requires people to wear seat belts while driving. The purpose of this law is to reduce the risk of injury or death in the event of a car accident.

The examples illustrate how the mens legis of a law is the reason why it was created. It is the underlying purpose or intention of the law. Understanding the mens legis is important because it helps us to interpret and apply the law in a way that achieves its intended purpose.