Page:An Essay on the Principle of Population (1798).djvu/64

tinuance of the physical causes that seem to have produced them, bear too convincing a testimony.

But, in order more fully to ascertain the validity of these three propositions, let us examine the different states in which mankind have been known to exist. Even a cursory review will, I think, be sufficient to convince us, that these propositions are incontrovertible truths.