Nietzsche:
“Being profound and seeming profound. —Those who know that they are profound strive for clarity. Those who would like to seem profound to the crowd strive for obscurity. For the crowd believes that if it cannot see to the bottom of something it must be profound. It is so timid and dislikes going into the water” (The Gay Science, 173).
Heidegger:
“Those in the crossing must in the end know what is mistaken by all urging for intelligibility: that every thinking of being, all philosophy, can never be confirmed by ‘facts,’ i.e., by beings. Making itself intelligible is suicide for philosophy” (Contributions to Philosophy (From Enowning) [Beitrage Zur Philosophie (Vom Ereignis)], notes of 1936–1938).