Note that the law is not derived from the rule, but it is out of the law, which has been previously adopted, that the rule is formed. Thus, the rules of grammar are based on the use of the approving authors and writers, but the use is not defined by the precepts. The rule does indeed expound the law, which has previously been adopted, followed in particular cases and is of a more general and universal nature, in the shortest and simplest way possible.
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