“Ethical ideas and sentiments have to be considered as parts of the phenomena of life at large.”

Kulturphilosophie (1923), Vol. 2 : Civilization and Ethics
Context: I must interpret the life about me as I interpret the life that is my own. My life is full of meaning to me. The life around me must be full of significance to itself. If I am to expect others to respect my life, then I must respect the other life I see, however strange it may be to mine. And not only other human life, but all kinds of life: life above mine, if there be such life; life below mine, as I know it to exist. Ethics in our Western world has hitherto been largely limited to the relations of man to man. But that is a limited ethics. We need a boundless ethics which will include the animals also.

9:40–10:10
Exuberant Skepticism (2012)

The Paris Review interview (1982)
Context: I never wrote my books especially for children. … When I sat down to write Mary Poppins or any of the other books, I did not know children would read them. I’m sure there must be a field of “children’s literature” — I hear about it so often — but sometimes I wonder if it isn’t a label created by publishers and booksellers who also have the impossible presumption to put on books such notes as “from five to seven” or “from nine to twelve.” How can they know when a book will appeal to such and such an age?
If you look at other so-called children’s authors, you’ll see they never wrote directly for children. Though Lewis Carroll dedicated his book to Alice, I feel it was an afterthought once the whole was already committed to paper. Beatrix Potter declared, “I write to please myself!” And I think the same can be said of Milne or Tolkien or Laura Ingalls Wilder.
I certainly had no specific child in mind when I wrote Mary Poppins. How could I? If I were writing for the Japanese child who reads it in a land without staircases, how could I have written of a nanny who slides up the banister? If I were writing for the African child who reads the book in Swahili, how could I have written of umbrellas for a child who has never seen or used one?
But I suppose if there is something in my books that appeals to children, it is the result of my not having to go back to my childhood; I can, as it were, turn aside and consult it (James Joyce once wrote, “My childhood bends beside me”). If we’re completely honest, not sentimental or nostalgic, we have no idea where childhood ends and maturity begins. It is one unending thread, not a life chopped up into sections out of touch with one another.
Once, when Maurice Sendak was being interviewed on television a little after the success of Where the Wild Things Are, he was asked the usual questions: Do you have children? Do you like children? After a pause, he said with simple dignity: “I was a child.” That says it all.<!--
But don’t let me leave you with the impression that I am ungrateful to children. They have stolen much of the world’s treasure and magic in the literature they have appropriated for themselves. Think, for example, of the myths or Grimm’s fairy tales — none of which were written especially for them — this ancestral literature handed down by the folk. And so despite publishers’ labels and my own protestations about not writing especially for them, I am grateful that children have included my books in their treasure trove.

The fact that an animal is a human, that is, that he belongs to the hominine species of beings, entitles him, regardless of his imperfections, to some sort of consideration.
Source: Better-World Philosophy: A Sociological Synthesis (1899), The Social Ideal, p. 143

Source: Kulturphilosophie (1923), Vol. 1 : The Decay and the Restoration of Civilization, Ch. 1 How Philosophy is Responsible for the Collapse of Civilization
Context: The ethical ideas on which civilization rests have been wandering about the world, poverty-stricken and homeless. No theory of the universe has been advanced which can give them solid foundation; in fact not one has made its appearance which can claim for itself solidity and inner consistency. The age of philosophical dogmatism had come to an end, and after that nothing was recognized as truth except the science which described reality. Complete theories of the universe no longer appeared as fixed stars; they were regarded as resting on hypothesis, and ranked no higher than comets.

Introduction
The Wedge (1944)

Source: Modern Astrophysics, London, 1924, Chapter XIV, page 182

Understanding Islam, "Morals and Ethics" http://vod.dmi.ae/media/96716/Ep_03_Morals_and_Ethics Dubai Media

From Her Books, I Have Chosen To Stay And Fight, SPEAKING UP