“In sum: banking theory and practice, as immobilizing and fixating forces, fail to acknowledge men and women as historical beings; problem-posing theory and practice take the people's historicity as their starting point.”

The earliest known appearance in print of this quote is Benjamin Brewster in the October 1881 - June 1882 issue of "The Yale Literary Magazine." Brewster asks, "What does his lucid explanation amount to but this, that in theory there is no difference between theory and practice, while in practice there is?" See page 202. https://books.google.com/books?id=iJ9MAAAAMAAJ&printsec=frontcover&vq=%22no+difference%22#v=onepage&q&f=false It has also been attributed by Doug Rosenberg and Matt Stephens (2007) Use Case Driven Object Modeling with UMLTheory and Practice p. xxvii as well as Walter J. Savitch, Pascal: An Introduction to the Art and Science of Programming (1984), where it is attributed as a "remark overheard at a computer science conference". It circulated as an anonymous saying for more than ten years before attributions to van de Snepscheut and Yogi Berra began to appear (and later still to various others).
Misattributed

Michel Henry, Marx I. une philosophie de la réalité, éd. Gallimard, coll. « Nrf », 1976, p. 353
Books on Economy and Politics, Marx. A Philosophy of Human Being (1976)
Original: (fr) Parce que la pratique est subjective, la théorie qui est toujours la théorie d’un objet, ne peut atteindre la réalité de cette pratique, ce qu’elle est en elle-même, sa subjectivité précisément, mais seulement se la représenter, de telle manière que cette représentation laisse hors d’elle l’être réel de la pratique, l’effectivité du faire. La théorie ne fait rien.

Examples of self-translation (c. 2004), Quotes - Zitate - Citations - Citazioni

Selections from the Prison Notebooks (1971).

The Marxian approach to system theorizing clearly points us to sociologically important phenomena: the material conditions of social life, stratification and social class, conflict, the reproduction as well as transformation of capitalist systems, the conditions that affect group mobilization and political power, and the ways ideas functions as ideologies.
Source: Systems theories (2006), p. 2.

Donald Knuth, quoted in: Arturo Gonzalez-Gutierrez (2007) Minimum-length Corridors: Complexity and Approximations. p. 99

Pedagogia do oprimido (Pedagogy of the Oppressed) (1968, English trans. 1970)

reflected even in our language—carving up "virgin territory," with strip mining often referred to as a "rape of the land" "Theory and Practice: Pornography and Rape" (1974) in Going Too Far: The Personal Chronicle of a Feminist.

Speech in reply to Addresses from both Houses of Parliament in Westminster Hall in the year of Her Golden Jubilee (30 April 2002)