The superior power of population cannot be checked without producing misery or vice.
Checked Misery Population Power Producing
A writer may tell me that he thinks man will ultimately become an ostrich. I cannot properly contradict him.
Cannot Contradict Him I Man
A great emigration necessarily implies unhappiness of some kind or other in the country that is deserted.
Deserted Emigration Great Implies Kind
No limits whatever are placed to the productions of the earth; they may increase forever.
Forever Increase Limits May Placed
Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio.
Doubling Every Geometrical Goes Increases
The histories of mankind are histories only of the higher classes.
Higher Histories Mankind Only