The perpetual struggle for room and food.

If it be taught that all who are born have a right to support on the land, whatever be their number, and that there is no occasion to exercise any prudence in the affair of marriage so as to check this number, the temptations, according to all the known principles of human nature, will inevitably be yielded to, and more and more will gradually become dependent on parish assistance.

I do not know that any writer has supposed that on this earth man will ultimately be able to live without food.

With regard to the duration of human life, there does not appear to have existed from the earliest ages of the world to the present moment the smallest permanent symptom or indication of increasing prolongation.

The perpetual tendency of the race of man to increase beyond the means of subsistence is one of the general laws of animated nature, which we can have no reason to expect to change.

Where are we to look for the consumption required but among the unproductive labourers of Adam Smith?.

Had population and food increased in the same ratio, it is probable that man might never have emerged from the savage state.