Søren Kierkegaard was a Christian author who was against applying the ideas of the Scientific Enlightenment to Christianity. He lived in Denmark from 1813 to 1855. His works were written to the single individual who might be interested in reading them.
all courage must needs perish, so soon as we are forced to the conviction that everything which we today revere as true, good, beautiful, is subject to change and may tomorrow become unstable, that what is today acclaimed “modern” may tomorrow be cast aside as obsolete. Rudolf Eucken 1912