introduce somebody to the subject

To ground us a little, I introduce the subject of politics.

He did not have to introduce the subject, in fact, for no one was talking about anything else.

It was the right moment for her to introduce the subject, she felt.

He was rather proud of the way he'd introduced the subject.

He introduced the subject of his life by saying, "I never wanted to write songs."

Once she tried to introduce the subject, but he h?

I thought it better to let you introduce the subject.

She introduced the subject, stated the date of the incident.

He searched for a polite way to introduce the subject.

It struck me that no harm could be done by introducing the subject which was ever in my mind.