  Reading Kundura's The Unbearable Lightness of Being I found it interesting what he considered the true feeling behind vertigo: that it is not a fear of heights, but a dilemma of choosing not to dive right into them. Always being aware of our own mortality, our existential curiosities must be curbed to our desire for perseverance. Vertigo is the knowledge of that ultimate realization of our own limited frailties in the presence of the grandness of the universe and its possibilities. 
