Terence, this is stupid stuff
How we cite our quotes:
And train for ill and not for good. (48)
Look, says Terence, life is rough. So if you want to be ready to deal with it, you should prepare ("train") for hard times rather than good ones. In this line, life almost sounds like a marathon. You don't train for the big race by lying on the couch and eating Doritos. You get out there and suffer, because you know it'll make things easier later.