He is really knowledgeable and always teaches us new information.

He is a famous playwright who has produced many wonderful works.

I live in Japan.

I love Japan.

Ancient Japan was a place where beautiful nature and culture merged.

They (referring to women or girls) are my best friends.

It's better for him not to know the truth. After all, ignorance is bliss.

He is feigning ignorance about that problem.

He knows that pain through his own experience.

I have no way of knowing what he is thinking.