“Dinosaurs, Neanderthals, and Denisovans did not evolve and adapt fast enough, and therefore they became extinct. Modus operandi or business as usual will doom the human race to mass extinction.”

"Dinosaur Renaissance", Scientific American 232, no. 4 (April 1975), 58—78
Dinosaur Renaissance (1975)

Source: The Sky Is Not the Limit: Adventures of an Urban Astrophysicist

Source: Less is More: How Degrowth Will Save the World (2021), Welcome to the Anthropocene, p. 8

"Meeting of the Minds : Buzz Aldrin Visits Arthur C. Clarke" by Andrew Chaikin (27 February 2001) http://web.archive.org/web/20010302082528/http://www.space.com/peopleinterviews/aldrin_clarke_010227.html
2000s and posthumous publications

Will that make you happy?"
Jace to Alec, pg. 10
Source: The Mortal Instruments, City of Ashes (2008)

Source: Christianity and the Social Crisis (1907), Ch.4 Why Has Christianity Never Undertaken the Work of Social Reconstruction?, p. 144
Context: When the machinery of [Roman] imperial administration broke down in the provinces under the invasion of the barbarians in the fifth century the machinery of the Church remained unbroken.... Ancient families became extinct and the Church became the heir of their lands and slaves and serfs. Small proprietors sought security by committing their lands to the Church and becoming its tenants.

Source: The Revival of Aristocracy (1906), p. 39.

"Dinosaur Renaissance", Scientific American 232, no. 4 (April 1975), 58—78
Dinosaur Renaissance (1975)

Bhawani Mandir, 1905
India's Rebirth