Knowing now what we have learned, unless the need were urgent, I could no more sink the blade of an ax into… — Edward Abbey

One wishes to go on. On this great river one could glide forever — and here we discover the definition of bliss, salvation, Heaven, all the old Mediterranean dreams: a journey from wonder to wonder, drifting through eternity into ever-deeper, always changing grandeur, through beauty continually surpassing itself: the ultimate Homeric voyage.

The idea of wilderness needs no defense. It only needs more defenders.

As for the "solitary confinement of the mind," my theory is that solipsism, like other absurdities of the professional philosopher, is a product of too much time wasted in library stacks between the covers of a book, in smoke-filled coffeehouses (bad for brains) and conversation-clogged seminars. To refute the solipsist or the metaphysical idealist all that you have to do is take him out and throw a rock at his head: if he ducks he's a liar. His logic may be airtight but his argument, far from revealing the delusions of living experience, only exposes the limitations of logic.