Living tree doctrine
In Canadian law, the living tree doctrine (French: théorie de l'arbre vivant) is a doctrine of constitutional interpretation that says that a constitution is organic and must be read in a broad and progressive manner so as to adapt it to the changing times. == Concept == The living tree doctrine has been deeply entrenched into Canadian constitutional law since the seminal constitutional case of Edwards v Canada (Attorney General), also widely known as the Persons Case, wherein Viscount Sankey stated in the 1929 decision: "The British North America Act planted in Canada a living tree capable of growth and expansion within its natural limits." This is known as the doctrine of progressive interpretation.