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

In a state therefore of great equality and virtue, where pure and simple manners prevailed, the increase of the human species would evidently be much greater than any increase that has been hitherto known.

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

The histories of mankind are histories only of the higher classes.

Evil exists in the world not to create despair but activity.

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.

The science of political economy is essentially practical, and applicable to the common business of human life. There are few branches of human knowledge where false views may do more harm, or just views more good.