Horace Ode 2.10

You will live more rightly, Licinius, by not always pressing the deep nor by hugging too much the uneven shore while you prudently bristle at the storms. Whoever approves the golden mean, safely lacks the filth of a dilapidated house, soberly lacks enviable palace. The huge pine is shaken more savagely by the winds, and lofty turrets topple in ruin with a heavier fall, and lightening strikes highest mountains. The well prepared heart hopes in hostile (times), fears the other lot in favorable (times). Jupiter brings back hideous winters, he likewise removes (them). If (it goes) badly now, it will not one day also be so. One day Apollo rouses the Muse being silent with his lyre and does not always stretch his bow. In poor affairs appear bold and brave; wisely you likewise will draw back swollen sails in a too favorable wind.