“The boldness of asking deep questions may require unforeseen flexibility if we are to accept the answers.”
Source: The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory
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Brian Greene 15
American physicist 1963Related quotes
Source: Fourth Realm Trilogy (2005-2009), The Traveler (2005), Ch. 2

The Ethics of Belief (1877), The Weight Of Authority
Context: In regard, then, to the sacred tradition of humanity, we learn that it consists, not in propositions or statements which are to be accepted and believed on the authority of the tradition, but in questions rightly asked, in conceptions which enable us to ask further questions, and in methods of answering questions. The value of all these things depends on their being tested day by day. The very sacredness of the precious deposit imposes upon us the duty and the responsibility of testing it, of purifying and enlarging it to the utmost of our power. He who makes use of its results to stifle his own doubts, or to hamper the inquiry of others, is guilty of a sacrilege which centuries shall never be able to blot out. When the labours and questionings of honest and brave men shall have built up the fabric of known truth to a glory which we in this generation can neither hope for nor imagine, in that pure and holy temple he shall have no part nor lot, but his name and his works shall be cast out into the darkness of oblivion for ever.

“Impossible questions require impossible answers.”
Alexander, sec. 54
Parallel Lives
Source: Philosophy in a New Key (1942), Ch. 1, p. 1

Autobiographical Essay (2001)

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]