And I agree with Antisthenes when he says, “Could I catch Aphrodite, I would shoot her; for she has destroyed many of our beautiful and good women.” And he says that “Love is a vice of nature, and the wretches who fall under its power call the disease a deity.” For in these words it is shown that stupid people are overcome from ignorance of pleasure, to which we ought to give no admittance, even though it be called a god, that is, though it be given by God for the necessity of procreation. And Xenophon, expressly calling pleasure a vice, says: “Wretch, what good dost thou know, or what honourable aim hast thou? which dost not even wait for the appetite for sweet things, eating before being hungry, drinking before being thirsty; and that thou mayest eat pleasantly, seeking out fine cooks; and that thou mayest drink pleasantly, procuring costly wines; and in summer runnest about seeking snow; and that thou mayest sleep pleasantly, not only providest soft beds, but also supports to the couches.” Whence, as Aristo said, “against the whole tetrachord of pleasure, pain, fear, and lust, there is need of much exercise and struggle.”