I doubt that the imagination can be suppressed. If you truly eradicated it in a child, he would grow up to be an eggplant. – Ursula K. Le Guin, The Language of the Night

Having imagination it takes you an hour to write a paragraph that if you were unimaginative would take you only a minute. – Franklin P. Adams

Nevertheless, the consuming hunger of the uncritical mind for what it imagines to be certainty or finality impels it to feast upon shadows in the prevailing famine of substance. – E. T. Bell