The Importance of Rationality in Human Existence

With each progressive scientific experiment that was undeniably bringing us an understanding of the natural world, how could any reasonable person say that science wasn't accessing something of the truth about reality? But then hundreds of years go by, and as the goals of the Enlightenment are played out, problems start to arise. This dynamic starts to produce philosophers that want to understand the limitations of classical rational thought. One of the first major ones that gives rise to this trend is Kierkegaard.