The other thing they have in common is that both require discipline.

Consider the discipline required simply to read such a sentence!

It requires discipline, putting yourself in the right frame of mind.

Both require equal discipline of their crews, but are also fair toward them.

But this requires hard work and discipline by students and parents.

These tricks are relatively easy, of course; but to perform them well requires discipline.

But that strategy, he cautioned, would require great patience and discipline.

It is hard work that requires discipline, physical stamina and imagination.

There was a predisposition to weakness in him which required greater discipline than perhaps he received.

But Nunzio believed discipline required that he beat his charge black and blue once a month.