Gandalf: I am looking for someone to share in an adventure

Gandalf: I am looking for someone to share in an adventure that I am arranging, and it’s very difficult to find anyone. 

Bilbo: I should think so—in these parts! We are plain, quiet folk and have no use for adventures. Nasty, disturbing, uncomfortable things! Make you late for dinner! I can’t think what anybody sees in them. . . . 

Gandalf: You’ll have a tale or two to tell of your own when you come back. 

Bilbo: Can you promise that I will come back? 

Gandalf: No. And if you do, you will not be the same.