“Is that the idea we now have of love? If I have a child, no matter how deformed that child may be, and if it dies, nobody can make the loss to me good by bringing a more beautiful child. I want the one I loved and the one I lost.”

Letter returned to him unopened, to the father of his former fiancée Ann Coleman, written after her death, rumored to have been suicide soon after her breaking of their engagement. (1819).
Context: You have lost a child, a dear, dear child. I have lost the only earthly object of my affection.... I have now one request to make,... deny me not. Afford me the melancholy pleasure of seeing her body before internment.

The Inferno (1917), Ch. XVII
Context: I shall not be able to listen any more, or look into the room, or hear anything distinctly. And I, who have not cried since my childhood, I cry now like a child because of all that I shall never have. I cry over lost beauty and grandeur. I love everything that I should have embraced.
Here they will pass again, day after day, year after year, all the prisoners of rooms will pass with their kind of eternity. In the twilight when everything fades, they will sit down near the light, in the room full of haloes. They will drag themselves to the window's void. Their mouths will join and they will grow tender. They will exchange a first or a last useless glance. They will open their arms, they will caress each other. They will love life and be afraid to disappear. Here below they will seek a perfect union of hearts. Up above they will seek everlastingness among the shades and a God in the clouds.

citation needed

A Conversation about Dr. Canon's Cure (1982).

Entry in her journal (10 October 1922) which she tore out to send to John Middleton Murry, before changing her mind. This later became the last published entry in The Journal of Katherine Mansfield (1927) ed. J. Middleton Murry
Context: By health I mean the power to live a full, adult, living, breathing life in close contact with what I love — the earth and the wonders thereof — the sea — the sun. All that we mean when we speak of the external world. A want to enter into it, to be part of it, to live in it, to learn from it, to lose all that is superficial and acquired in me and to become a conscious direct human being. I want, by understanding myself, to understand others. I want to be all that I am capable of becoming so that I may be (and here I have stopped and waited and waited and it’s no good — there’s only one phrase that will do) a child of the sun. About helping others, about carrying a light and so on, it seems false to say a single word. Let it be at that. A child of the sun.

Source: The Man in the High Castle (1962)
Context: When I was a child, I thought as a child. But now I have put away childish things.... I must be scientific.

Why this professor's climate-crisis solution is rankling Twitter: 'The worst thing you can do is have a child' https://www.yahoo.com/lifestyle/why-professor-climate-crisis-solution-rankling-twitter-155305526.html (13 February 2020) Yahoo!Life

Personal inscription on a copy of Mother Goose in Prose (1897) which he gave to his sister, Mary Louise Baum Brewster, as quoted in The Making of the Wizard of Oz (1998) by Aljean Harmetz, p. 317
Letters and essays
Context: When I was young I longed to write a great novel that should win me fame. Now that I am getting old my first book is written to amuse children. For aside from my evident inability to do anything "great," I have learned to regard fame as a will-o-the-wisp which, when caught, is not worth the possession; but to please a child is a sweet and lovely thing that warms one's heart and brings its own reward.

Source: World of the Five Gods series, Paladin of Souls (2003), p. 201