Discourses: Book 4 10 : 5
But that this may take place a man must accept no small troubles, and must miss no small things. You cannot wish for a consulship and at the same time wish for this; you cannot have set your heart upon having lands and this too; you cannot at the same time be solicitous for your paltry slaves and yourself too. But if you wish for any one of the things that are not your own, what is your own is lost. This is the nature of the matter: Nothing is done except for a price. And why be surprised? If you wish to be consul you must keep vigils, run around, kiss men's hands, rot away at other men's doors, say and do many slavish things, send presents to many persons, and guest-gifts to some people every day. And what is the outcome of it all? Twelve bundles of rods, and the privilege of sitting three or four times on the tribune, and giving games in the Circus, and lunches in little baskets. Or else let someone show me what there is in it beyond this. For calm, then, for peace of mind, for sleeping when you are asleep, and being awake when you are awake, for fearing nothing, for being in great anxiety about nothing, are you unwilling to spend anything, to make any exertion? But if something that belongs to you be lost while you are engaged in these affairs, or be spent to no purpose, or someone else get what you ought to have got, are you going to be vexed immediately at what has happened? Will you not balance off what you are getting in return for what, how much in return for how much? Nay, do you wish to get such valuable things for nothing? And how can you? "One serious business with another."