It is said of Stephen Gerard, a Frenchman, who pursued a remarkably successful career in the United States, that when he heard of a clerk with a strong temper, he would readily take him into his employment, and set him to work in a room by himself; Gerard being of opinion that such persons were the best workers, and that their energy would expend itself in work if removed from the temptation to quarrel.
Strong temper may only mean a strong and excitable will.

Uncontrolled, it displays itself in fitful outbreaks of passion; but controlled and held in subjection--like steam pent-up within the organised mechanism of a steam-engine, the use of which is regulated and controlled by slide-valves and governors and levers--it may become a source of energetic power and usefulness.

Hence, some of the greatest characters in history have been men of strong temper, but of equally strong determination to hold their motive power under strict regulation and control.
The famous Earl of Strafford was of an extremely choleric and passionate nature, and had great struggles with himself in his endeavours to control his temper.

Referring to the advice of one of his friends, old Secretary Cooke, who was honest enough to tell him of his weakness, and to caution him against indulging it, he wrote: "You gave me a good lesson to be patient; and, indeed, my years and natural inclinations give me heat more than enough, which, however, I trust more experience shall cool, and a watch over myself in time altogether overcome; in the meantime, in this at least it will set forth itself more pardonable, because my earnestness shall ever be for the honour, justice, and profit of my master; and it is not always anger, but the misapplying of it, that is the vice so blameable, and of disadvantage to those that let themselves loose there-unto." [154] Cromwell, also, is described as having been of a wayward and violent temper in his youth--cross, untractable, and masterless--with a vast quantity of youthful energy, which exploded in a variety of youthful mischiefs.

He even obtained the reputation of a roysterer in his native town, and seemed to be rapidly going to the bad, when religion, in one of its most rigid forms, laid hold upon his strong nature, and subjected it to the iron discipline of Calvinism.