No tort is assignable, in law or equity. It is not within any species of action at common law. - Joseph Yates

Ideas are free. But while the author confines them to his study, they are like birds in a cage, which none but he can have a right to let fly : for till he thinks proper to emancipate them, they are under his own dominion.

The common law of England must direct the determination of a common law question. By common-law determinations we are bound; and to them we must always adhere: for, these are the proper constitutional declarations of the law of the land. They are so considered, even by the Court of Chancery itself. When any doubt arises in a cause of equity concerning a point of common law, it is usually referred to the determination of a Court of Common Law.

If the custom be general, it is the law of the realm: if local only, it is lex loci, the law of the place. Now, all laws are general, as far as the law extends; and all customs of England are of course, immemorial.1 No usage, therefore, can be part of that law, or have the force of a custom, that is not immemorial.