Quotes by Mental Strength To create something you must be something. Johann Wolfgang von Goethe mental-strength literature Mental strength is what separates champions from near champions. Rafael mental-strength champion You can never be free until you develop the mental strength to stop fretting over things you cannot control. Robert Ringer mental-strength fretting I have so much respect for people in the service. The mental strength it takes to do what they do is unbelievable. Torrey DeVitto mental-strength unbelievable people I should say that mental strength is No. 1, experience [is] No. 2, physical strength is No. 3, and genetic ability that you're getting from Mother Nature probably comes after. Wladimir Klitschko mental-strength should mother