The rational is not thinkable without its other, the non-rational, and it never appears in reality without it. The only question is, in what form the other appears, how it remains in spite of all, and how it is to be grasped.
It is appropriate for philosophizing to strive to absorb the non-rational and counter-rational, to form it through reason, to change it into a form of reason, indeed, finally to show it as identical with reason; all Being should become law and order.
But both the defiant will and honest mind turn against this. They recognize and assert the unconquerable non-rational.
We wish to subordinate ourselves to the natural character of impulses and passions, to the immediacy of what is now present. These drives are now translated by the philosophy which adheres to them into a knowledge of the non-rational: philosophy expresses its falling into the non-rational, the counter-rational, and the super-rational as a knowledge about them. Yet, even in the most radical defiance of reason, there remains a minimum of rationality.
For Aristotle, there were men, the alogoi, who had a better principle than deliberative reason; their affairs succeeded without and even counter to reason.
The contemporary philosophical situation is determined by the fact that two philosophers, Kierkegaard and Nietzsche, who did not count in their times and, for a long time, remained without influence in the history of philosophy, have continually grown in significance. Philosophers after Hegel have increasingly returned to face them, and they stand today unquestioned as the authentically great thinkers of their age. Both their influence and the opposition to them prove it. Why then can these philosophers no longer be ignored, in our time?
In the situation of philosophizing, as well as in the real life of men, Kierkegaard and Nietzsche appear as the expression of destinies…
Whoever even once thought he heard softly the authentic philosophic note can never tire of trying to communicate it.
– Karl Jaspers
Who has thought about the deepest, loves what is most alive. – Hölderlin
Every metaphysical question can only be put in such a way that the questioner as such is by his very questioning involved in the question. – Heidegger