Quotes by Keeping Promises The promises of yesterday are the taxes of today. William Lyon Mackenzie kept-promises keeping-promises yesterday The politician's promises of yesterday are the taxes of today. William Lyon Mackenzie King keeping-promises political yesterday Rarely promise, but, if lawful, constantly perform. William Penn keeping-promises wisdom wise Oft expectation fails, and most oft there where most it promises; and oft it hits where hope is coldest, and despair most fits. William Shakespeare keeping-promises failure hope «123