As all executive authority is vested in the sovereign, royal assent is required to allow for bills to become law and for letters patent and orders in council to have legal effect. While the power for these acts stems from the Canadian people through the constitutional conventions of democracy, executive authority remains vested in the Crown and is only entrusted by the sovereign to the government on behalf of the people. This underlines the Crown's role in safeguarding the rights, freedoms, and democratic system of government of Canadians, reinforcing the fact that "governments are the servants of the people and not the reverse". Thus, within Canada's constitutional monarchy the sovereign's direct participation in any of these areas of governance is normally limited, with the sovereign typically exercising executive authority only on the advice of the executive committee of the Queen's Privy Council for Canada, and the sovereign's legislative and judicial responsibilities largely carried out through parliamentarians as well as judges and justices of the peace. However, there are cases where the sovereign or their representative would have a duty to act directly and independently under the doctrine of necessity to prevent genuinely unconstitutional acts.