“Their prison is only in their own minds, yet they are in that prison; and so afraid of beeing taken in that they cannot be taken out. But come, children. I have other work to do.
He went to the door an they all followed him. He raised his head and roared, ‘Now it is time! then louder, ‘Time!’ ; then so loud that it could have shaken the stars, ‘TIME’. The Door flew open.”
C.S. LEWIS, The Cronicles of NARNIA, VII.13