You can be a little ungrammatical if you come from the right part of the country.
— Robert Frost

I fear we are not getting rid of God because we still believe in grammar.
Friedrich Nietzsche grammar quote

Grammar is a piano I play by ear. All I know about grammar is its power.
— Joan Didion

From now on, ending a sentence with a preposition is something up with which I will not put.
— Winston Churchill

Writing is an act of faith, not a trick of grammar.
— grammar quotation by E.B. (Elwyn Brooks) White