Neither is the ancient rule amiss, to bend nature as a wand to a contrary extreme, whereby to set it right; understanding it where the contrary extreme is no vice. Let not a man force a habit upon himself with a perpetual continuance, but with some intermission, for both the pause reinforceth the new onset; and if a man that is not perfect be ever in practice, he shall as well practise his errors as his abilities, and induce one habit of both; and there is no means to help this but by seasonable intermissions. But let not a man trust his victory over his nature too far; for nature will lie buried a great time, and yet revive upon the occasion or temptation; like as it was with Æsop’s damsel, turned from a cat to a woman, who sat very demurely at the board’s end till a mouse ran before her. Therefore, let a man either avoid the occasion altogether, or put himself often to it, that he may be little moved with it. A man’s nature is best perceived in privateness, for there is no affectation; in passion, for that putteth a man out of his precepts; and in a new case or experiment, for there custom leaveth him. They are happy men whose natures sort with their vocations; otherwise they may say, “Multum incola fuit anima mea,”[411] when they converse in those things they do not affect. In studies, whatsoever a man commandeth upon himself, let him set hours for it: but whatsoever is agreeable to his nature, let him take no care for any set times; for his thoughts will fly to it of themselves, so as the spaces of other business or studies will suffice. A man’s nature runs either to herbs or weeds; therefore, let him seasonably water the one, and destroy the other. XXXIX.—OF CUSTOM AND EDUCATION.