-Take care of the King. Everything else follows.
-This is a King. This is your life. One mistake and it can be taken away.
-To protect the King. Now, he is old and has survived many battles. So he can only move one spot at a time. So, who's got his back if he can only move one spot? The queen. Now, she is smarter faster, and stronger than her King. The knight is the horse. Now, he can move two spots forward and one spot to the side. The trusty bishop is his diagonal attack.
The rook, he patrols the entire board. He can move as many spaces as he wants, as long as it's in the same direction he was moving. Oh yes, the pawns. They are the front line. They will be casualties.