There is much in being that man cannot manage. There is but little that comes to be known. What is known remains inexact, what is mastered insecure.
Each being we encounter and which encounters us keeps to this curious opposition of presence in that it always withholds itself at the same time in a concealedness.
Heidegger, "The Origins of the Work of Art" in
Poetry, Language, Thought, translations and
introduction by Albert Hofstadter, Perennial Classics