If politics is to become scientific, and if the event is not to be constantly surprising, it is imperative that our political thinking should penetrate more deeply into the springs of human action. What is the influence of hunger upon slogans? How does their effectiveness fluctuate with the number of calories in your diet? If one man offers you democracy and another offers you a bag of grain, at what stage of starvation will you prefer the grain to the vote?

Bertrand Russell, ‘Nobel Lecture’, December 11, 1950