Every one may know that to will and not to do, when there is opportunity, is in reality not to will; and that to love what is good and not to do it, when it is possible, is in reality not to love it. Will, which stops short of action, and love, which does not do the good that is loved, is a mere thought separate from will and love, which vanishes and comes to nothing.
Heaven and Hell (ed. 1758)