To not say all that can be said is the secret of discipline and economy.
Discipline imposed from the outside eventually defeats when it is not matched by desire from within.
Whoever submits himself to a super-discipline can expect great triumphs.
Those who have nothing have only their discipline.
The essence of self-discipline is to do the important thing rather than the urgent thing.
True discipline is really just self-remembering; no forcing or fighting is necessary.
True freedom is impossible without a mind made free by discipline.
Self-respect is the root of discipline: The sense of dignity grows with the ability to say no to oneself.
Who so would be a man must be a nonconformist.
The discipline of desire is the background of character.