Even in dialogue, your own style rules your selection. Do not give yourself a blank check of this kind: 'I'll merely reproduce what I think a character like so-and-so would say.' You have to reproduce it in the way your literary premises dictate.
Ayn RandWhen she had gone upstairs, he walked to a window and stood looking up at the sky. His head thrown back, he felt the pull of his throat muscles and he wondered whether the peculiar solemnity of looking at the sky comes, not from what one contemplates, but from that uplift of one's head.
Ayn RandSince only an individual man can possess rights, the expression "individual rights"? is a redundancy (which one has to use for purposes of clarification in today's intellectual chaos). But the expression "collective rights"? is a contradiction in terms.
Ayn Rand