Revise. Morvich was swifter than any racehorse of his day.

431. After a superlative degree, include the subject of comparison within the class with which it is compared.

Wrong. Shakespeare is the greatest of any other poet.

Right. Shakespeare is the greatest of all poets.

Revise. A slave is the most miserable of all other men.

432. Avoid an inconsistent change of person within the sentence.

Wrong. You can lead a horse to water, but nobody can make him drink.

Right. You can lead a horse to water, but you cannot make him drink.

Revise. I have done the best I could, and I do not think a person should be required to do more.