The three cases of personal pronouns are objective, possessive, and nominative.
I, we, you, he, she, it, they are nominative cases. They are used when a personal pronoun is used as the subject of a verb or as a predicate nominative.
Me, us, you, him, her, hers, its, their, and theirs are objective cases. They are used when the noun or pronoun is used as an direct or indirect object of a verb, or as the object of a preposition.
My, mine, our, ours, your, yours, his, her, hers, its, their, theirs are possessive cases. They are used to show ownership.
<span>Keats used it in one instance, where he was criticising Coleridge, who, in the opinion of Keats, wrote his poetry in order to search for truth and as a result missed out on beauty and its elevating affects. </span>I hope my answer has come to your help. God bless and have a nice day ahead!