Unpleasant feeling

I closed the front door and while I was going down the stairs to take my car I had an unpleasant feeling, I didn´t know the reason ...

I felt a little bit sleepy although I had drunk strong coffee before leaving this morning.

After a few seconds, I thought to myself: "there was a fire last night ... but they are safe and sound"

I read some pages of a book before going to bed ... and one of my first thoughts this morning had a direct relation with the story of the book ...

I was thinking about the characters ... suddenly I overwhelmed by a sensation of pleasure ... they are safe ...

What makes a book great?