Every man’s character has a dual quality to it. One quality is etched into every man’s consciousness from birth, more or less. And this is the quality of reason that Nature herself has endowed us with; it is that which separates us from the unreasoning brutes.
It is a universal quality, in the sense that every man possesses it. From this rational aspect we get our innate sense of justice and fairness. It is also what gives man that special curiosity about the world: it is that which impels him to make inquiries into everything, to investigate everything, and to try to find answers for the riddles of Nature.