If you got the point in conversation, say so. The information can go in parentheses in the text, as I just did it. Avoid a lot of quotation. YOU are doing the writing here. The trick is to use your ideas to good purpose.
Useful ideas are expensive.
Useful original ideas only occur once in a blue moon. It is often useful to outline. Put a provisional formulation of your thesis at the top. Each of these things is a major sub-thesis. And so on, until you've got something so complete that writing the paper is mainly a matter of transcribing your outline into standard prose.