Indispensability Quotes

Sexual relations, of course, have existed, exist, and will exist. However, this is in no way connected with the indispensability of the existence of the family. (Ferdinand Mount)
In its resistance to the great attack on traditional dogma launched by the Enlightenment, the Protestant theology of the 19th century ... had very largely agreed in taking up a defensive position in which the truth of Christian faith was to be proved by demonstrating the indispensability of religious feeling to all higher humanity. ... Yet on this basis it was not possible to refute the contention of Ludwig Feuerbach that the secret of theology is anthropology. ... The secret of God was in truth that of self-glorifying man speaking of God and extolling his own divinity. View quote
Helmut Gollwitzer
When a country armed to the teeth with nuclear weapons and overwhelmed by its own exceptionalism and indispensability has political and media lunatics equating a bait-click commercial marketing scheme with Pearl Harbor, that country is a recipe for the end of the world. View quote
Paul Craig Roberts
In summary, then, the set theoretic 'needs' of physics are surprisingly similar to the set theoretic needs of pure logic. Both disciplines need some set theory to function at all. Both disciplines can 'live' - but live badly - on the meager diet of only predicative sets. Both can live extremely happily on the rich diet of impredicative sets. Insofar, then, as the indispensability of quantification over sets is any argument for their existence - and we will discuss why it is in the next section - we may say that it is a strong argument for the existence of at least predicative sets, and a pretty strong, but not as strong, argument for the existence of impredicative sets. View quote
Hilary Putnam