"Whatsoever is lawful in the Commonwealth or permitted to the subject in the ordinary way cannot be forbidden to him for religious uses; and whatsoever is prejudicial to the Commonwealth in their ordinary uses and, therefore, prohibited by the laws, ought not to be permitted to churches in their sacred rites. For instance, it is unlawful in the ordinary course of things or in a private house to murder a child; it should not be permitted any sect then to sacrifice children. It is ordinarily lawful (or temporarily lawful) to kill calves or lambs; they may, therefore, be religiously sacrificed. But if the good of the State required a temporary suspension of killing lambs, as during a siege, sacrifices of them may then be rightfully suspended also. [emphasis added] This is the true extent of toleration." --Thomas Jefferson: Notes on Religion, 1776.