The ordeal of virtue is to resist all temptation to evil.
Population, when unchecked, increases in a geometrical ratio.
The histories of mankind are histories only of the higher classes.
The superior power of population cannot be checked without producing misery or vice.
No limits whatever are placed to the productions of the earth; they may increase forever.
The friend of the present order of things condemns all political speculations in the gross.
It is an acknowledged truth in philosophy that a just theory will always be confirmed by experiment.
The rich, by unfair combinations, contribute frequently to prolong a season of distress among the poor.
Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio.
A great emigration necessarily implies unhappiness of some kind or other in the country that is deserted.