A very interesting article of Hume, one of the most famous philosophers. The analytical philosophy or positivistic epistemology is often called a dispassionate discouse and I bet it's because of Humes investigation in human rationalism.
"David Hume, who died in his native Edinburgh in 1776, has become something of a hero to academic philosophers. In 2009, he won first place in a large international poll of professors and graduate students who were asked to name the dead thinker with whom they most identified. The runners-up in this peculiar race were Aristotle and Kant. Hume beat them by a comfortable margin. Socrates only just made the top twenty."