2. Dr. Plot, in his history of Staffordshire, tells of an idiot, that chancing to live within the sound of a clock, and always amusing himself with counting the hour of the day whenever the clock struck: the clock being spoiled by some accident, the idiot continued to strike and count the hour without the help of it, in the same manner as he had done when it was entire.
3. Though I dare not vouch for the truth of this story, it is very certain that custom has a mechanical effect upon the body, at the same time that it has a very extraordinary influence upon the mind.
4. I shall in this paper consider one very remarkable effect which custom has upon human nature; and which, if rightly observed, may lead us into very useful rules of life. What I shall here take notice of in custom, is its wonderful efficacy in making every thing pleasant to us.
5. A person who is addicted to play or gaming, though he took but little delight in it at first, by degrees contracts so strong an inclination towards it, and gives himself up so entirely to it, that it seems the only end of his being. The love of a retired or busy life will grow upon a man insensibly, as he is conversant in the one or the other, till he is utterly unqualified for relishing that to which he has been for some time disused.
6. Nay, a man may smoke or drink, or take snuff, till he is unable to pass away his time without it; not to mention how our delight in any particular study, art, or science, rises and improves in proportion to the application which we bestow upon it. Thus what was at first an exercise, becomes at length an entertainment. Our employments are changed into diversions. The mind grows fond of those actions it is accustomed to, and is drawn with reluctancy from those paths in which it has been used to walk.
7. Not only such actions as were at first indifferent to us, but even such as were painful, will by custom and practice become pleasant.
8. Sir Francis Bacon observes in his natural philosophy, that our taste is never better pleased than with those things which at first create a disgust in it. He gives particular instances of claret, coffee, and other liquors; which the palate seldom approves upon the first taste: but when it has once got a relish of them, generally retains it for life. The mind is constituted after the same manner, and after having habituated itself to any particular exercise or employment, not only loses its first aversion towards it, but conceives a certain fondness and affection for it.
9. I have heard one of the greatest genuises this age has produced, who had been trained up in all the polite studies of antiquity, assure me, upon his being obliged to search into several rolls and records, that notwithstanding such an employment was at first very dry and irksome to him, he at last took an incredible pleasure in it, and preferred it even to the reading of Virgil or Cicero.
10. The reader will observe that I have not here considered custom as it makes things easy, but as it renders them delightful; and though others have often made the same reflection, it is possible they may not have drawn those uses from it, with which I intend to fill the remaining part of this paper.
11. If we consider attentively this property of human nature, it may instruct us in very fine moralities. In the first place, I would have no man discouraged with that kind of life or series of actions, in which the choice of others or his own necessities may have engaged him. It may perhaps be very disagreeable to him at first; but use and application will certainly render it not only less painful, but pleasing and satisfactory.