Galveston County Daily News, Feb. 3, 2009 UTMB's Dr. Michael Warren, in his weekly column, says that a physician should be honest with patients when he or she is unable to figure out what ails a patient. "‘I don't know' should be one of the most important phrases in any physician's vocabulary and should be used without shame or embarrassment. The patient should be able to expect and be thankful for such honesty."