“The chief difference between me and others is that I have plenty of time — not only because I am without a multitude of responsibilities and without daily tasks, which demand attention: But also because I am basically without ambition. Neither the present nor the future has claims on me.”

Source: Just Listen

Source: Lamb: The Gospel According to Biff, Christ's Childhood Pal

Quote in "Picasso", Hans L. C. Jaffe, Thames and Hudson Ltd
Attributed from posthumous publications

Vol. 1: 'My beautiful One, My Unique!', pp. 130-140
1895 - 1905, Lettres à un Inconnu, 1901 – 1905; Museo Communale, Ascona

Recorded by a reporter after Sitting Bull's retreat to Canada after being defeated in the Black Hills War, originally published in the New York Herald on November 16, 1877. Published in Utley, Robert M. The Lance and the Shield. New York: Henry Holt and Co., 1993. p. 190.

p. 9 https://books.google.com/books?id=sUTZCwAAQBAJ&pg=PA9
1990s, The Ragamuffin Gospel (1990)

"Albertine", in Albertine (2006)

Truman Library address (2006)
Context: I believe we have a responsibility not only to our contemporaries but also to future generations — a responsibility to preserve resources that belong to them as well as to us, and without which none of us can survive. That means we must do much more, and urgently, to prevent or slow down climate change. Everyday that we do nothing, or too little, imposes higher costs on our children and our children’s children. Of course, it reminds me of an African proverb — the earth is not ours but something we hold in trust for future generations. I hope my generation will be worthy of that trust.