Thomas Malthus

"The power of population is so superior to the power of the earth to produce subsistence for man, that premature death must in some shape or other visit the human race."

"Population, when unchecked, increases in a geometrical ratio."

"The means of subsistence increase in an arithmetical ratio."

"That the increase of population is necessarily limited by the means of subsistence."

"The history of mankind will be found to be a history of a struggle."

"The real price of labour is the quantity of the necessaries and conveniences of life which are given for it."

"Every man has a right to live, but he has not a right to subsistence when his labour will not procure it."

"To live comfortably, every man must produce more than he consumes."

"The poor have not hitherto had a fair trial."

"War, pestilence, and famine are the natural checks to overpopulation."

"Moral restraint is the only virtuous check to population."

"The failure to marry and have children is the truest way to virtue."

"Prudential restraint in marriage would be the best remedy for poverty."

"Constancy in the marriage relation is a virtue in the highest degree."

"The evils arising from the principle of population appear to spring from no want of benevolence in the Deity."

"Perfect equality is impossible."

"Inequality is the grand spur to social improvement."

"Without inequality, there would be no motive for exertion."

"The lower classes of society are less under the dominion of reason."

"Education is the most powerful engine of improvement."

"Knowledge of natural laws is essential to happiness."

"Prudence and foresight are virtues that increase happiness."

"The greatest happiness consists in the absence of physical pain."

"Virtue is the foundation of all real prosperity."

"Idleness is the root of many vices."

"Industry and frugality are the foundations of success."

"Habits of industry and economy are the best inheritance."

"The laboring classes are the true support of society."

"Commerce and trade are engines of civilisation."

"Property rights are essential to social order."