“We love our habits more than our income, often more than our life.”

“If all our happiness is bound up entirely in our personal circumstances it is difficult not to demand of life more than it has to give.”

“Our great democracies still tend to think that a stupid man is more likely to be honest than a clever man, and our politicians take advantage of this prejudice by pretending to be even more stupid than nature made them.”

“Stupidity and unconscious bias often work more damage than venality.”

“Modesty... consists in pretending not to think better of ourselves and our belongings than of the man we are speaking to and his belongings.”

“If men would learn to pursue their own happiness rather than the misery of others, we can achieve a better life for everyone. Adopting this would help turn our Earth into a paradise.”

“Those who have a scientific outlook on human behaviour, moreover, find it impossible to label any action as ‘sin’; they realise that what we do has its origin in our heredity, our education, and our environment, and that it is by control of these causes, rather than by denunciation, that conduct injurious to society is to be prevented.”