My son saw his little sister being picked on at school. He refused to simply walk away. What he did next made me proud.

“Nobody leaves.”

Mark stared at me.

I could see the battle happening inside him.

Then, finally, he reached into the inside pocket of his jacket.

He pulled out an old envelope.

The paper was yellowed.

Creased.

Worn at the edges.

My name was written across the front.

My handwriting.