The word 'discipline' means a training that produces obedience or self-controlled behaviour to the orders of a proper authority. In every walk of life, discipline is of supreme importance. When a number of people are engaged to perform some colossal work, they must observe certain rules and obey the persons placed over them. That is called 'discipline'. If they do not obey the rules or their superiors, the work is likely to suffer.

In a battle-field, every soldier must obey the command of his higher officers. If not, the army, lacking discipline, is likely to lose the battle. It is only that a disciplined army is found to march forward and win the war. There are thouĀ­sands of such examples in the pages of history.