  It is instructive to contrast Clarke's view of freedom with a stream of thought in Christian theology, dating back at least to Augustine, according to which the saints in heaven are perfected to the degree that they not only do not sin, they no longer are able to sin, a perfection that is found in God and the angels. In our earthly state we have the freedom to turn from the good and do evil, but in the life to come we shall have a superior sort of freedom, a freedom that does not include the ability to do evil. Thus Augustine says: