"In Chancery, every particular case stands upon its own circumstances, and although the common law will not decree against the general rule of law, yet Chancery doth, so as the example introduce not a general mischief. Every matter, therefore, that happens inconsistent with the design of the legislator, or is contrary to natural justice, may find relief here. For no man can be obliged to anything contrary to the law of nature ; and indeed no man in his senses can be presumed willing to oblige another to it."