if something is there, you can only see it with your eyes open, but if it isn't there, you can see it just as well with your eyes closed. That's why imaginary things are often easier to see than real ones.
Norton JusterAnd now," he continued, speaking to Milo, "where were you on the night of July 27?" "What does that have to do with it?" asked Milo. "It's my birthday, that's what," said the policeman as he entered "Forgot my birthday" in his little book. "Boys always forget other people's birthdays.
Norton Juster