Set theory and the continuum hypothesis, pp. 19–20 https://books.google.com/books?id=Z4NCAwAAQBAJ&pg=PA19
Set Theory and the Continuum Hypothesis (1966)
“This compositional variety is mediated by a highly redundant set structure, a second-order all-combinatorial set; each set form is hexachordally equivalent to or totally disjunct from fifteen other set forms, so that one-third of all the available set forms belong to a collection of sets which are hexachordally aggregate forming, that is, hexachordally identical.”
On Igor Stravinsky's Movements. Perspectives of new music, Spring-Summer 1964
Help us to complete the source, original and additional information
Milton Babbitt 6
American composer 1916–2011Related quotes
Source: The Human Form: Sculpture, Prints, and Drawings, 1977, p. 7.

“Don't get set into one form, adapt it and build your own, and let it grow, be like water.”
Bruce Lee: A Warrior's Journey (2000); here, Lee was reciting lines he wrote for his short lived role on the TV series Longstreet.
Context: Don't get set into one form, adapt it and build your own, and let it grow, be like water. Empty your mind, be formless, shapeless — like water. Now you put water in a cup, it becomes the cup; You put water into a bottle it becomes the bottle; You put it in a teapot it becomes the teapot. Now water can flow or it can crash. Be water, my friend.

La doctrine économique d'Adam Smith, c'est la doctrine de Mandeville, exposée sous une forme non plus paradoxale et littéraire, mais rationnelle et scientifique.
Élie Halévy La formation du radicalisme philosophique (Paris: F. Alcan, 1901-4) vol. 1, p. 162; Mary Morris (trans.) The Growth of Philosophic Radicalism (Clifton, N.J.: A. M. Kelley, 1972) p. 90.
Criticism
"Proletariat into a Class: The Process of Class Formation from Karl Kautsky’s The Class Struggle to Recent Controversies", Politics & Society (1977)

"Mathematics without foundations"
Source: Philosophical Papers Volume 1: Mathematics, Matter, and Method (1975, 1979)
Context: (If we identify sets with the points that represent them in the various possible concrete structures, we might say: it is not possible for all possible sets to exist in any one world!) Yet set theory does not become impossible. Rather, set theory becomes the study of what must hold in, e.g. any standard model for Zermelo set theory.

The Usurpation Of Language (1910)
Context: The human mind loves the bondage of words and is apt, when freed from one form of their tyranny, to set up another more oppressive than the last.
The highest function of philosophy is to enforce the attitude of meditation and therewithal restrain the excessive volubility of the tongue. To us it seems that the reflective thinker wins his greatest victories when by what he says he compels us to recognise the relative insignificance of anything he can say. His task is not to capture Reality, but to free it from captivity.