De Sacrificiis Abelis Et Caini

But if you indeed receive fatigue from labour, and still your nature does not advance at all on the road to improvement, but is rather opposed to your becoming better by progress, then abandon the pursuit and be quiet, for it is a difficult task to go against nature. On which account the scripture adds: "And if you do not exchange it, you shall ransom it for money;" which means, but if you are not able to exchange labour for improvement, then give up your labour; for the idea of ransoming carries with it the notion of emancipating the mind from vain and unproductive care.