He soon after began research into the subject, and his first paper was published in 1930.

I tried to find the words to ease into the subject, but it wasn't easy.

Now we would get into the subject of my bail again.

Since his grandmother was there he couldn't very well work into the subject.

Well, a letter is no place for deep discussions, so I will not go into the subject.

I will not even go into the subject of bananas.

Whatever direction the conversation takes, it will not get into the subject of what Jack is doing here.

His approach laid the foundation for modern research into the subject.

He decided not to go into the subject of rape; she would never understand it.

But every teacher - even if split up into subjects?