subject of thought

See: contents
References in classic literature ?
He had arrived at none at all that was socially producible, and as for that matter of his "thinking" (thinking the better or the worse of anything there) he was wholly taken up with one subject of thought.
The making a fact the subject of thought raises it.
Speaking on the subject of Thought Leadership In Knowledge Economy Dr.
The subject of thought is to herself part of the content of her thought as the agent of a process of thinking that generates a specific kind of unity of mental contents.