“Without self-discipline, success is impossible, period.”

“There can be no self-government without self-discipline. There can be no self-government without self-control. There can be no liberty unless it is grounded in moral discipline and the ability to do what is right.”

“Self-discipline without talent can often achieve astounding results, whereas talent without self-discipline inevitably dooms itself to failure.”

“True freedom is impossible without a mind made free by discipline.”

“Even the highly intelligent and educated are not successful without discipline.”

“I have learned that success in business, and perhaps in most aspects of life, requires both self-discipline and objectively imposed discipline from outside.”

“Criticism is directly proportional to success. Therefore, it's almost impossible to wish for success without tasting the former attribute.”

“Jewish success is due to a culture that promotes excellence, blessed with self discipline, education, dedication and a quest for leaving this world a better place.”

“The success of any nation is impossible without the political participation, the economic empowerment, the education, and health, of women.”

“An evolving discipline–whether it be history or economics or astrophysics or immunology–is ever dynamically changing. Two steps forward and X steps back, so to speak. Periodically, the scholarly group registers more or less self-confidence, self-esteem, and complacency. We careerists are happiest when recent past achievements have seemed to be successful, but when still there are completable tasks dimly visible ahead.”