"If I had permitted my failures, or what seemed to me at the time a lack of success, to discourage me I cannot see any way in which I would ever have made progress."
"The most successful men in the end are those whose success is the result of steady accretion... It is the man who carefully advances step by step, with his mind becoming wider and wider - and progressively better able to grasp any theme or situation - persevering in what he knows to be practical, and concentrating his thought upon it, who is bound to succeed in the greatest degree."
"People of mediocre ability sometimes achieve outstanding success because they don't know when to quit. Most men succeed because they are determined to."
"Formulate and stamp indelibly on your mind a mental picture of yourself as succeeding. Hold this picture tenaciously. Never permit it to fade. Your mind will seek to develop the picture...Do not build up obstacles in your imagination."