Its from heart of darkness the book and comes from this extract, And why not? The
mind of man is capable of anything—because everything
is in it, all the past as well as all the future. What was there
after all? Joy, fear, sorrow, devotion, valour, rage—who can
tell?— but truth—truth stripped of its cloak of time. Let the
fool gape and shudder—the man knows, and can look on
without a wink