As a queen sits down, knowing that a chair will be there,
Or a general raises his hand and is given the field-glasses,
Step off assuredly into the blank of your mind.
Something will come to you. . . .
 
Try to remember this: what you project
Is what you will perceive; what you perceive
With any passion, be it love or terror,
May take on whims and powers of its own.
 
“Walking to Sleep”
Richard Wilbur