"I was assaulted by Kierkegaardian dread"

 Søren Kierkegaard (1813-1855) was a Danish philosopher, now best known for his book Fear and Trembling. He inspired Existentialist philosophers such as Sartre and Camus. Kierkegaard argued that the lack of certainty in the world led to a feeling of Angst: unfocused fear or anxiety.