Meaning of “The heights by great men reached and kept…”

Large achievements often depend more on continued effort than on a single burst of power.

Good work can require endurance before results appear, so delayed reward is not treated as proof that effort is useless.

The moral values sustained progress over bursts of speed that are not matched by attention or follow-through.

Small repeated efforts can accomplish work that seems too large for a single burst of effort, making consistency itself a practical form of strength.

Persistent effort improves the odds of useful results because steady work creates more opportunities for progress than waiting for favorable circumstances.

The sentence presents business success as a compound result of sustained energy and persistence rather than a single clever idea or fortunate moment.