De Agricultura

Therefore since the mind, the ruler of the flock, having taken the flock of the soul, using the law of nature as its teacher, governs it consistently and vigorously, rendering it worthy of approbation and great praise; but when it manages it sluggishly and indulgently, with a disregard of law, then it renders it blameable. Very naturally, therefore, the one will assume the name of a king, being addressed as a shepherd, but the other will only have the title of a confectioner, or of a baker, being called a keeper of sheep, supplying the means of feasting and gluttonous eating to cattle accustomed to gorge themselves to satiety.