(Another excerpt from the book The Drawing of the Three by Stephen King)
If you have given up your heart for the Tower, Roland, you have already lost. A heartless creature is a loveless creature, and a loveless creature is a beast. To be a beast is perhaps bearable, although the man who has become one will surely pay hell’s own price in the end, but what if you should gain your object? What if you should, heartless, actually storm the Dark Tower and win it? If there is naught but darkness in your heart, what could you do except degenerate from beast to monster? To gain one’s object as a beast would only be bitterly comic, like giving a magnifying glass to an elephaunt. But to gain one’s object as a monster. . .
To pay hell is one thing. But do you want to own it?