“An operation is some action one object performs upon another in order to elicit a reaction.”

—  Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 80

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Grady Booch photo
Grady Booch35
American software engineer 1955

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“The object of a dialogical-liberterian action is not to 'dislodge' the oppressed from a mythological reality in order to 'bind' them to another reality. On the contrary, the object of dialogical action is to make it possible for the oppressed, by perceiving their adhesion, to opt to transform an unjust reality.”

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“An action which is suffered by, or required of, an object. Operations may be selectors, constructors, or iterators. An operation is contained in an object's interface and has its details described in a corresponding method. Operations may be composite, i. e., composed of other operations. However, encapsulation of composite operations within the interface to an object is not encouraged.”

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“All existing things upon this earth, which have knowledge of their own existence, possess, some in one degree and some in another, the power of thought, accompanied by perception, which is the awakening of thought by the effects of external objects upon the senses.”

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“To every action there is always opposed an equal reaction; or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.”

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“There is not one of you whose actions do not operate on the actions of others — operate, we mean, in the way of example.”

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Context: There is not one of you whose actions do not operate on the actions of others — operate, we mean, in the way of example. He would be insignificant who could only destroy his own soul; but you are all, alas! of importance enough to help also to destroy the souls of others.... Ye cannot live for yourselves; a thousand fibres connect you with your fellow-men, and along those fibres, as along sympathetic threads, run your actions as causes, and return to you as effects.

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Quam multum interest quid a quoque fiat!

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Letter 24, 1.
Letters, Book VI

“Another discovery was that the size and importance of an action is no yardstick of its personal unpleasantness. A big operation which commands headlines may be a dawdle for some of those involved, while the little forgotten patrol is a real horror.”

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Source: Quartered Safe Out Here (1992), p. 46.

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“Liberation is a praxis: the action and reflection of men and women upon their world in order to transform it.”

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Source: Pedagogia do oprimido (Pedagogy of the Oppressed) (1968, English trans. 1970), Chapter 2

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