Rules for writers, Tenth edition - Diana Hacker, Nancy Sommers 2021

Capitalize the first word of a quoted sentence but not a quoted word or phrase
Capitalization
Mechanics

Loveless writes, “If failing schools are ever to be turned around, much more must be learned about how schools age as institutions” (25).

Steven Pinker has written that one important element of good writing is “attention to the readers’ vantage point” (26).

If a quoted sentence is interrupted by explanatory words, do not capitalize the first word after the interruption. (See 38e.)

“When we all think alike,” he said, “no one is thinking.”

When quoting poetry, copy the poet’s capitalization exactly. Many poets capitalize the first word of every line of poetry; a few contemporary poets dismiss capitalization altogether.

it was the week that

i felt the city’s narrow breezes rush about

me

— Don L. Lee