Plutarch De curiositate 13

[13] Farther, to forbear mixing with a crowd of fellows that are quarrelling in the market-place, or to sit still while the mad rabble are rioting in the streets, or at least to get out of hearing of it, will not be very difficult to any man that considers how little there is to be gained by intermeddling with busy and unquiet people, and how great the certain advantage is of bridling our curiosity, and bringing it under subjection to the commands of reason. And thus, when by this more easy discipline a man hath acquired some power over himself, exercises of greater difficulty are to be attempted; as, for instance, to forbear the theatre upon the tempting fame of some new and much applauded play; to resist the importunity of a friend that invites thee to a ball, an entertainment at the tavern, or a concert of music; and not to be transported if thou chance at a distance to hear the din at a race-course, or the noise at the circus. For as Socrates advises well, that men should abstain from tasting those meats and drinks which, by their exquisite pleasantness, tempt the palate to exceed the sober measures of thirst and hunger, so are all those oblectations of the ear and eye to be avoided which are apt to entice men into impertinence or extravagance. When Araspes had commended the fair Panthea to Cyrus, as a beauty worth his admiration, he replied: For that very reason I will not see her, lest, if by thy persuasion I should see her but once, she herself might persuade me to see her often, and spend more time with her than would be for the advantage of my own affairs. So Alexander, upon like consideration, would not trust his eyes in the presence of the beautiful queen of Persia, but kept himself out of the reach of her charms, and treated only with her aged mother. But we, alas! (that no opportunity may be lost of doing ourselves all the mischief we can by our curiosity) cannot forbear prying into sedans and coaches, or gazing at the windows or peeping under the balconies, where women are; nay, we must be staring about from the house-top, to spy out all occasions of our ruin, and are all the while so sottishly inconsiderate as to apprehend no danger from giving such a boundless license to our wandering eyes.