“Don't spend your precious time asking "Why isn't the world a better place?" It will only be time wasted. The question to ask is "How can I make it better?" To that there is an answer.”

"The Scotty Who Knew Too Much", The New Yorker (18 February 1939)
From Fables for Our Time and Further Fables for Our Time

Cameron Country, broadcast on BBC TV, July 12, 1969.

The Last Lecture (2008)

Homecoming saga, The Memory Of Earth (1992)

Il y avait un nombre important de questions que je m'étais posées et, comme vous le savez, lorsqu'on se pose vraiment les questions, on donne de meilleures réponses que si l'on se contente de lire les réponses convenues.
explaining how he came to write his textbook on quantum mechanics, in Descente au coeur de la matière, an interview edited by [Stéphane Deligeorges, Le monde quantique, Editions du Seuil, Sciences et Avenir, 1984, 2020089084, 111]

Source: The Glass Castle

Source: The Dresden Files, Summer Knight (2002), Chapter 10

ibid, 114-5

Source: Bob Marley Talking