"As a thinker I keep discovering that beauty itself is as much a fact, and a mystery...I consider nature's facts -- its beautiful and grotesque forms and events -- in terms of the import to thought and their impetus to the spirit. In nature I find grace tangled in a rapture with violence; I find an intricate landscape whose forms are fringed in death; I find mystery, newness, and a kind of exuberant, spendthrift energy."