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

The greatest talents have been frequently misapplied and have produced evil proportionate to the extent of their powers. Both reason and revelation seem to assure us that such minds will be condemned to eternal death, but while on earth, these vicious instruments performed their part in the great mass of impressions, by the disgust and abhorrence which they excited.

The great and unlooked for discoveries that have taken place of late years have all concurred to lead many men into the opinion that we were touching on a period big with the most important changes.

Man cannot live in the midst of plenty.

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

The moon is not kept in her orbit round the earth, nor the earth in her orbit round the sun, by a force that varies merely in the inverse ratio of the squares of the distances.

Population regulates itself by the funds which are to employ it, and therefore always increases or diminishes with the increase or the diminution of capital. Every reduction of capital is therefore necessarily followed by a less effective demand for corn, by a fall in price, and by a diminished cultivation.