" (Marco's thoughts in captivity).
"What will it be best to think about first? This he said because one of the most absorbedly fascinating things he and his father talked about together was the power of the thoughts which human beings allow to pass through their minds, the strange strength of them... What he (his father) believed, he had taught Marco quite simply from his childhood. It was this: he himself, Marco... was the magician. He held and waved his wand himself, and his wand was his own thought. When special privation or anxiety beset them, it was their rule to say, What will it be best to think about first, which was Marco's reason for saying it to himself now...
(recalling his father's words):
Let pass through thine mind, my son, only the image which thou would desire to see as truth. Meditate only upon the wish of thy heart, seeing first that it could injure no man and is not ignoble. Then will it take earthly form and draw near to thee. This is the law of that which creates. "

― Frances Hodgson Burnett , The Lost Prince