The block quote is used for quotations that are longer than 4 lines. Do not use quotation marks. Introduce the block quote on a new line. Indent the entire quote 1 inch or 12-16 spaces. Include the page number at the end of your block quote outside of the ending period. Be sure to specify the source in the introduction phrase/sentence, which ends in either a colon or a period.
At the conclusion of Lord of the Flies, Ralph and the other boys realize the horror of their actions:
The tears began to flow and sobs shook him. He gave himself up to them now for the first time on the island; great, shuddering spasms of grief that seemed to wrench his whole body. His voice rose under the black smoke before the burning wreckage of the island; and infected by that emotion, the other little boys began to shake and sob too. (186)