“Those societies in which seriousness, tradition, conformity and adherence to long-established - often god-prescribed - ways of doing things are the strictly enforced rule, have always been the majority across time and throughout the world. Such people are not known for their sense of humour and lightness of touch; they rarely break a smile. To them, change is always suspect and usually damnable, and they hardly ever contribute to human development. By contrast, social, artistic and scientific progress as well as technological advance are most evident where the ruling culture and ideology give men and women permission to play, whether with ideas, beliefs, principles or materials. And where playful science changes people's understanding of the way the physical world works, political change, even revolution, is rarely far behind.”

“For a patrimonial state to be stable over time, it is best ruled with consent, at least with consent from the largest minority, if not from the majority. Instinctive obedience must be the norm, otherwise too much effort needs to be put into suppressing disaffection for the regime's wider aims to be achievable. Consent is, however, not always easy to obtain. The collective view of most societies is rather conservative: in the main people prefer to see the social arrangements of their youth perpetuated into their old age; they prefer that things be done in the time-honoured way; they are suspicious of novelty and resistant to change. Thus when radical action must be taken, for whatever reason, a great burden falls on the ruler, the father-figure, who has to overcome this social inertia and persuade his subjects to follow his lead. In order that his will shall prevail, he needs to generate huge respect, preferably adulation, and if at all possible sheer awe among his people.”

“But belief in a system cannot be sustained for ever. Empires based solely on power and domination, while allowing their subjects to do as they will, can last for centuries. Those that try to control the everyday lives of their people are much harder to sustain.”

“The world changes materially. Science makes advances in technology and understanding. But the world of humanity doesn't change.”

“A hugely complicated, centrally planned, social and economic system can only be kept on the rails for as long as people believe in it.”

“For many centuries people have believed that there is continuity between the individual in utero and the individual in the world; now there is solid evidence that this ancient belief is correct, albeit in a far more complex and nuanced way than our ancestors ever imagined. But science can't tell us everything we need to know about this new perspective; there's always a gap where the hard evidence of the laboratory meets the soft flesh of our bodies.”

“Ideas are very important to the shaping of society. In fact, they are more powerful than bombings or armies or guns. And this is because ideas are capable of spreading without limit. They are behind all the choices we make. They can transform the world in a way that governments and armies cannot. Fighting for liberty with ideas makes more sense to me than fighting with guns or politics or political power. With ideas, we can make real change that lasts.”