He knows that pain through his own experience.

I have no way of knowing what he is thinking.

He is working hard to make his abilities known to the world.

In order to understand his feelings, I had a deep conversation with him.

God only knows what he is thinking.

The Hadean eon is considered the first era of Earth, lasting from about 4.6 billion years ago to 4 billion years ago.

He is a believer of the Roman Catholic Church.

He likes to take a walk in the park at dusk.

She described the pain of a broken heart as tears.

I don't know a thing about him.