When you want to really emphasize words in a sentence, should you put a period behind each word?

NO just use big letter.

no i don’t think you should ever put periods behind a single word because it is not a full sentence

in   ¨and yet the books¨   by czelaw miloz the tone is positive since it tells us that when we touch a book, it starts to live and the perspective is in the third person and turns once into the first person. in "the rhinoceros" by eugene ionesco the tone is illogical and absurd   and the perspective is in the third person since it is a play.