Against my will, in the course of my travels, the belief that everything worth knowing was known at Cambridge gradually wore off. In this respect my travels were very useful to me.

Religion is something left over from the infancy of our intelligence, it will fade away as we adopt reason and science as our guidelines.

Science is what you know, philosophy is what you don't know.

The fundamental concept in social science is Power, in the same sense in which Energy is the fundamental concept in physics.

Almost everything that distinguishes the modern world from earlier centuries is attributable to science, which achieved its most spectacular triumphs in the seventeenth century.