The existential way of understanding human beings has some illustrious progenitors in Western history, such as Socrates in his dialogues, Augustine in his depth-psychological analyses of the self, Pascal in his struggle to find a place for the heart's reasons which the reason knows not of. But it arose specifically just over a hundred years ago in Kierkegaard's violent protest against the reigning rationalism of his day Hegel's totalitarianism of reason, to use Maritain's phrase. Kierkegaard proclaimed that Hegel's identification of abstract truth with reality was an illusion and amounted to trickery. Truth exists, wrote Kierkegaard, only as the individual himself produces it in action.

p. 49 - The Discovery of Being (1983)