Sören Kierkegaard (1813–1855) Danish philosopher and theologian, founder of Existentialism
1847
1840s, The Journals of Søren Kierkegaard, 1840s
Context: It is the duty of the human understanding to understand that there are things which it cannot understand, and what those things are. Human understanding has vulgarly occupied itself with nothing but understanding, but if it would only take the trouble to understand itself at the same time it would simply have to posit the paradox.