"Don't take them too serious" That would be "seriosly."

Also after a sentence ends and you put a period there, the following word is capitalized.

People who live in glass houses....

"Io sono stanco, sono imbigliato, and I wan't everyone here to know, there ain't gonna be no trouble from me..Don Corleone..Cicc' a port!"

"I stood in the courtroom like a fool."

"I am Constanza: Lord of the idiots."