“What on earth should we do if we had no matches to make, or mar; no "unfortunate attachments" to shake our heads over; no flirtations to speculate about and comment upon with knowing smiles; no engagements "on" or "off" to speak our minds about, nosing out every little circumstance, and ferreting out our game to their very hole, as if all their affairs, their hopes, trials, faults, or wrongs, were being transacted for our own private and peculiar entertainment! Of all forms of gossip — I speak of mere gossip, as distinguished from the carrion-crow and dunghill-fly system of scandal-mongering — this tittle-tattle about love-affairs is the most general, the most odious, and the most dangerous.
Every one of us must have known within our own experience many an instance of dawning loves checked, unhappy loves made cruelly public, happy loves embittered, warm, honest loves turned cold, by this horrible system of gossiping about young or unmarried people…”

The statement "The future of all life, including our own, depends on our mindful steps." and much of the theme of this essay also occur later in his writings, including The World We Have : A Buddhist Approach to Peace and Ecology (2008), Ch. 1 : The Bells of Mindfulness, p. 3
The Sun My Heart (1996)
Context: All life is impermanent. We are all children of the Earth, and, at some time, she will take us back to herself again. We are continually arising from Mother Earth, being nurtured by her, and then returning to her. Like us, plants are born, live for a period of time, and then return to the Earth. When they decompose, they fertilize our gardens. Living vegetables and decomposing vegetables are part of the same reality. Without one, the other cannot be. After six months, compost becomes fresh vegetables again. Plants and the Earth rely on each other. Whether the Earth is fresh, beautiful, and green, or arid and parched depends on the plants.
It also depends on us. Our way of walking on the Earth has a great influence on animals and plants. We have killed so many animals and plants and destroyed their environments. Many are now extinct. In turn, our environment is now harming us. We are like sleepwalkers, not knowing what we are doing or where we are heading. Whether we can wake up or not depends on whether we can walk mindfully on our Mother Earth. The future of all life, including our own, depends on our mindful steps.

The Problem of Peace (1954)

Statements in PBS interview with Margaret Warner (October 11, 2013)

Source: Stargirl

Source: Twitter https://twitter.com/CaroRackete/status/1276803845465636864 (27 June 2020)

Introduction to the publication of Tolstoy's A Letter to a Hindu, Indian opinion, 25 December, (1909)
1900s

The Better Part (1901)
Context: Mankind is governed by the worst — the strongest example of this is to be seen in American municipalities, but it is true of every government. We are governed by rogues who hold their grip upon us by and through statute law. Were it not for law the people could protect themselves against these thieves, but now we are powerless and are robbed legally. One mild form of coercion these rogues resort to is to call us unpatriotic when we speak the truth about them. Not long ago they would have cut off our heads. The world moves. Governments cannot be done away with instantaneously, but progress will come, as it has in the past by lessening the number of laws. We want less governing, and the ideal government will arrive when there is no government at all.
So long as governments set the example of killing their enemies, private individuals will occasionally kill theirs. So long as men are clubbed, robbed, imprisoned, disgraced, hanged by the governing class, just so long will the idea of violence and brutality be born in the souls of men.

First Mansions, Ch. 1, as translated by E. Allison Peers (1961) p. 18
Interior Castle (1577)
Context: It is no small pity, and should cause us no little shame, that, through our own fault, we do not understand ourselves, or know who we are. Would it not be a sign of great ignorance, my daughters, if a person were asked who he was, and could not say, and had no idea who his father or mother was, or from what country he came? Though that is a great stupidity, our own is incomparably greater if we make no attempt to discover what we are, and only know that we are living in these bodies and have a vague idea, because we have heard it, and because our faith tells us so, that we possess souls. As to what good qualities there may be in our souls, or who dwells within them, or how precious they are — those are things which seldom consider and so we trouble little about carefully preserving the soul's beauty. All our interest is centred in the rough setting of the diamond and in the outer wall of the castle – that is to say in these bodies of ours.