Cast stones, whence men, a flinty race, were reared.
Up then! if fat the soil, let sturdy bulls
Upturn it from the year's first opening months,
And let the clods lie bare till baked to dust
By the ripe suns of summer; but if the earth
Less fruitful just ere Arcturus rise
With shallower trench uptilt it- 'twill suffice;
There, lest weeds choke the crop's luxuriance, here,
Lest the scant moisture fail the barren sand.
Then thou shalt suffer in alternate years
The new-reaped fields to rest, and on the plain
A crust of sloth to harden; or, when stars
Are changed in heaven, there sow the golden grain
Where erst, luxuriant with its quivering pod,
Pulse, or the slender vetch-crop, thou hast cleared,
And lupin sour, whose brittle stalks arise,
A hurtling forest. For the plain is parched
By flax-crop, parched by oats, by poppies parched
In Lethe-slumber drenched. Nathless by change
The travailing earth is lightened, but stint not
With refuse rich to soak the thirsty soil,
And shower foul ashes o'er the exhausted fields.
Thus by rotation like repose is gained,
Nor earth meanwhile uneared and thankless left.
Oft, too, 'twill boot to fire the naked fields,
And the light stubble burn with crackling flames;
Whether that earth therefrom some hidden strength
And fattening food derives, or that the fire
Bakes every blemish out, and sweats away
Each useless humour, or that the heat unlocks