Note. This rule does not apply to quoted fragments of sentences.
4. Every proper noun or abbreviation of a proper noun begins with a capital letter.
5. Most adjectives derived from proper nouns begin with capital letters; as,—American, Indian, Swedish, Spenserian.
Note. Some adjectives derived from proper nouns have ceased to be closely associated in thought with the nouns from which they come, and therefore begin with small letters. Thus,—voltaic, galvanic, mesmeric, maudlin, stentorian.
6. Every title attached to the name of a person begins with a capital letter.
- Mr. Thomas Smith
- John Wilson, Esq.
- Miss Allerton
- Dr. F. E. Wilson
- C. J. Adams, M.D.
- President Grant
- Professor Whitney
- Sir Walter Raleigh
7. In titles of books, etc., the first word, as well as every important word that follows, begins with a capital letter.
8. The interjection O and the pronoun I are always written in capital letters.
9. Personal pronouns referring to the Deity are often capitalized.
Note. Usage varies: the personal pronouns are commonly capitalized when they refer to the Deity, the relatives less frequently. The rule is often disregarded altogether when its observance would result in a multitude of capitals, as in the Bible and in many hymn books and works of theology.