“[P]opulation, when unchecked, goes on doubling itself every twenty-five years, or increases in a geometrical ratio. ... [T]he means of subsistence, under circumstances the most favorable to human industry, could not possibly be made to increase faster than in an arithmetical ratio.” YearsHumansMeanMadeScienceFiveFoodGoes OnIndustryCircumstancesIncreaseTwentiesFasterFive YearsTwenty FiveRatiosSubsistence Author:Thomas Malthus
“A man who has made up his mind on a given subject twenty-five years ago and continues to hold his political opinions after he has been proved to be wrong is a man of principle; while he who from time to time adapts his opinions to the changing circumstances of life is an opportunist.” MenYearsMindHas BeensMadePoliticalLife IsGivenOpinionPrinciplesFiveSubjectsCircumstancesYears AgoTwentiesFive YearsTwenty FiveOpportunistPolitical Opinions Author:A. P. Herbert