“We think we write definitively of those parts of our nature that are dead and therefore beyond change, but that which writes is still changing — still in doubt. Even a monotonously undeviating path of self-examination does not necessarily lead to self-knowledge. I stumble towards my grave confused and hurt and hungry.”

Source: Initiation, The Perfecting of Man (1923)

Source: Hatchet

Saving Ourselves From Self-Destruction (2004)
Context: Nuclear proliferation is on the rise. Equipment, material and training were once largely inaccessible. Today, however, there is a sophisticated worldwide network that can deliver systems for producing material usable in weapons. The demand clearly exists: countries remain interested in the illicit acquisition of weapons of mass destruction.
If we sit idly by, this trend will continue. Countries that perceive themselves to be vulnerable can be expected to try to redress that vulnerability — and in some cases they will pursue clandestine weapons programs. The supply network will grow, making it easier to acquire nuclear weapon expertise and materials. Eventually, inevitably, terrorists will gain access to such materials and technology, if not actual weapons.
If the world does not change course, we risk self-destruction.

On Writing Poetry (1995)
Context: I no longer feel I'll be dead by thirty; now it's sixty. I suppose these deadlines we set for ourselves are really a way of saying we appreciate time, and want to use all of it. I'm still writing, I'm still writing poetry, I still can't explain why, and I'm still running out of time. Wordsworth was sort of right when he said, "Poets in their youth begin in gladness/ But thereof comes in the end despondency and madness." Except that sometimes poets skip the gladness and go straight to the despondency. Why is that? Part of it is the conditions under which poets work — giving all, receiving little in return from an age that by and large ignores them — and part of it is cultural expectation — "The lunatic, the lover and the poet," says Shakespeare, and notice which comes first. My own theory is that poetry is composed with the melancholy side of the brain, and that if you do nothing but, you may find yourself going slowly down a long dark tunnel with no exit. I have avoided this by being ambidextrous: I write novels too. But when I find myself writing poetry again, it always has the surprise of that first unexpected and anonymous gift.

Harvard University address (1978)
Context: Even if we are spared destruction by war, our lives will have to change if we want to save life from self-destruction. We cannot avoid revising the fundamental definitions of human life and human society. Is it true that man is above everything? Is there no Superior Spirit above him? Is it right that man's life and society's activities have to be determined by material expansion in the first place? Is it permissible to promote such expansion to the detriment of our spiritual integrity?
If the world has not come to its end, it has approached a major turn in history, equal in importance to the turn from the Middle Ages to the Renaissance. It will exact from us a spiritual upsurge, we shall have to rise to a new height of vision, to a new level of life where our physical nature will not be cursed as in the Middle Ages, but, even more importantly, our spiritual being will not be trampled upon as in the Modern era.
This ascension will be similar to climbing onto the next anthropologic stage. No one on earth has any other way left but — upward.

The Sun My Heart (1996)
Context: If you are a mountain climber or someone who enjoys the countryside or the forest, you know that forests are our lungs outside of our bodies. Yet we have been acting in a way that has allowed millions of square miles of land to be deforested, and we have also destroyed the air, the rivers, and parts of the ozone layer. We are imprisoned in our small selves, thinking only of some comfortable conditions for this small self, while we destroy our large self. If we want to change the situation, we must begin by being our true selves. To be our true selves means we have to be the forest, the river, and the ozone layer. If we visualize ourselves as the forest, we will experience the hopes and fears of the trees. If we don't do this, the forests will die, and we will lose our chance for peace. When we understand that we inter-are with the trees, we will know that it is up to us to make an effort to keep the trees alive.

Source: Clockwork Angel