CIC 1917 term for impediments, which render a person incapable of making a juridical act with any person. E.g. impediment of ordination, impediment of previous bond, impediment of perpetual vow of chastity of one in Religious Institute of Pontifical right for marriage etc. are absolute impediments for contracting marriage. The CIC and CCEO has suppressed the distinctions of absolute impediment, simple impediments etc. (see “impediment”).


A duty is a moral obligation that an agent has towards another person. Often duties have a corresponding right; but, certain duties do not have corresponding rights. These are duties that one must not do-no matter what. Thomas Aquinas argued that we have specific duties or obligations to avoid committing specific sins. Since sins such as theft are absolute, then our duty to avoid stealing is also absolute, irrespective of any good consequences that might arise from particular acts of theft. In the order of faith, Ten Commandments can be said to be absolute duties of a Christian.