This is grammar, and I have not studied grammar. The logician has no need of grammar, whereas the grammarian does need logic. For logic enquires into the meaning, whereas grammar enquires into the expression. If, therefore, the logician deals with the expression, it is accidental, and it is likewise accidental if the grammarian deals with the meaning. Now, the meaning is more exalted than the expression, and the expression humbler than the  meaning.[5]