John Lennon song: "You may say I'm a dreamer, but I'm not the only one."?

Questions

"---------- are all in your mind."Anonymous?

"---------- expands according to our willingness to put up with it."- Barry Farber?

"---------- is a word used in advertising circles to refer to any incident to which the word "emergency" cannot be applied."- Fred Allen?

"----------- is one of the permanent and certain characteristics of a vigorous mind,"- Samuel Johnson - 1751?

"You can never plan the ----------- by the past."- Edmund Burke?