Who is the author of this book?

The postscript of this book was written by the author himself.

He has confidence in his own abilities.

I write a diary every day.

He wrote a letter and sent it to his friend.

He has a habit of reading a book every day.

He left the room in just a moment.

It's important to believe in yourself.

There are three blades of grass and two tree trunks in the park.

He wrote a novel based on the book.