A feather will weigh down a scale when there is nothing in the opposite one.

THERE is scarcely any inquiry more curious, or, from its importance, more worthy of attention, than that which traces the causes which practically check the progress of wealth in different countries, and stop it, or make it proceed very slowly, while the power of production remains comparatively undiminished, or at least would furnish the means of a great and abundant increase of produce and population.

Every endeavor should be used to weaken and destroy all those institutions relating to corporations, apprenticeships, &c, which cause the labours of agriculture to be worse paid than the labours of trade and manufactures.

Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio.

Where there are few people, and a great quantity of fertile land, the power of the earth to afford a yearly increase of food may be compared to a great reservoir of water, supplied by a moderate stream. The faster population increases, the more help will be got to draw off the water, and consequently an increasing quantity will be taken every year. But the sooner, undoubtedly, will the reservoir be exhausted, and the streams only remain.

It is an acknowledged truth in philosophy that a just theory will always be confirmed by experiment.

The perpetual struggle for room and food.