The ancient intuition that all matter, all "reality," is energy, that all phenomena, including time and space, are mere crystallizations of mind, is an idea with which few physicists have quarreled since the theory of relativity first called into question the separate identities of energy and matter. Today most scientists would agree with the ancient Hindus that nothing exists or is destroyed, things merely change shape or form; that matter is insubstantial in origin, a temporary aggregate of he pervasive energy that animates the electron.

Where to begin? Do we measure the relaxing of the feet? The moment when the eye glimpses the hawk, when instinct functions? For in this pure action, this pure moving of the bird, there is no time, no space, but only the free doing-being of this very moment -now!

And only the enlightened can recall their former lives; for the rest of us, the memories of past existences are but glints of light, twinges of longing, passing shadows, disturbingly familiar, that are gone before they can be grasped, like the passage of that silver bird on Dhaulagiri.

In the clearness of this Himalayan air, mountains draw near, and in such splendor, tears come quietly to my eyes and cool on my sunburned cheeks. this is not mere soft-mindedness, nor am I all that silly with the altitude. My head has cleared in these weeks free of intrusions- mail, telephones, people and their needs- and I respond to things spontaneously, without defensive or self-conscious screens. Still, all this feeling is astonishing: not so long ago I could say truthfully that I had not shed a tear in twenty years.

Alec Wilkinson is a spare, clear, and lucid writer who works in stylistic simplicity with material that is not simple at all.

There's an elegiac quality in watching [American wilderness] go, because it's our own myth, the American frontier, that's deteriorating before our eyes. I feel a deep sorrow that my kids will never get to see what I've seen, and their kids will see nothing; there's a deep sadness whenever I look at nature now.

The great stillness in these landscapes that once made me restless seeps into me day by day, and with it the unreasonable feeling that I have found what I was searching for without ever having discovered what it was.