A slight acquaintance with numbers will shew the immensity of the first power in comparison of the second.
By that law of our nature which makes food necessary to the life of man, the effects of these two unequal powers must be kept equal.
This implies a strong and constantly operating check on population from the difficulty of subsistence.

This difficulty must fall somewhere and must necessarily be severely felt by a large portion of mankind.
Through the animal and vegetable kingdoms, nature has scattered the seeds of life abroad with the most profuse and liberal hand.

She has been comparatively sparing in the room and the nourishment necessary to rear them.

The germs of existence contained in this spot of earth, with ample food, and ample room to expand in, would fill millions of worlds in the course of a few thousand years.

Necessity, that imperious all pervading law of nature, restrains them within the prescribed bounds.
The race of plants and the race of animals shrink under this great restrictive law.