The first thing you have to know is yourself. A man who knows himself can step outside himself and watch his own reactions like an observer.
Adam SmithThe learned ignore the evidence of their senses to preserve the coherence of the ideas of their imagination.
Adam SmithTo found a great empire for the sole purpose of raising up a people of customers, may at first sight appear a project fit only for a nation of shopkeepers. It is, however, a project altogether unfit for a nation of shopkeepers; but extremely fit for a nation whose government is influenced by shopkeepers.
Adam Smith