252. Is it not vain for a merchant to journey by night and by day, that he may be able to heap up treasures? Is it not vain for him to gather merchandise, and to be much perturbed about its price, for fear he might sell it for less than he gave? that he should strive everywhere for high prices, and thus unexpectedly call up robbers against himself through their envy at his much-vaunted business; or that, without waiting for calmer winds, impatient of delays, he should meet with shipwreck whilst seeking for gain?