“(…) everything is inter-linked. And therefore everything has numberless causes. The entire universe contributes to the least thing. A thing is as it is because the world is as it is. (…)”

Cause, Principle, and Unity (1584)

OM Chanting and Meditation (2010) http://books.google.co.uk/books/about/OM_Chanting_and_Meditation.html?id=3KKjPoFmf4YC,

Preface, Hot Afternoons Have Been in Montana: Poems, 1957

19th April 1826.
Zibaldone (1898)

Source: The Sacred Depths of Nature (1998), p. 167
Context: We are, each one of us, ordained to live out our lives in the context of ultimate questions, such as:
Why is there anything at all, rather than nothing?
Where did the laws of physics come from?
Why does the universe seem so strange?
My response to such questions has been to articulate a covenant with Mystery. Others, of course, prefer to respond with answers, answers that often include a concept of god. These answers are by definition beliefs since they can neither be proven nor refuted. They may be gleaned from existing faith traditions or from personal search. God may be apprehended as a remote Author without present-day agency, or as an interested Presence with whom one can form a relationship, or as pantheistic — Inherent in All Things.
The opportunity to develop personal beliefs in response to questions of ultimacy, including the active decision to hold no Beliefs at all, is central to the human experience. The important part, I believe, is that the questions be openly encountered. To take the universe on — to ask Why Are Things As They Are? — is to generate the foundation for everything else.

The Trouble With Being Born (1973)

Source: The Use of Lateral Thinking