Perpetua lex est

Perpetua lex est, nullam legem humanum ac positivam perpetuam esse; etclausula quae abrogationem excludit initio non valet. It is a perpetuallaw that no human or positive law can be perpetual; and a clause in a lawwhich precludes the power of abrogation is void ab initio. Bacon's Max.in Reg. 19.