„Subject. A Subject is a mechanism for guiding a reader (analyst, problem domain expert, manager, client) through a large, complex model. Subjects are also helpful for organizing work packages on larger projects, based upon initial OOA investigations.“

—  Edward Yourdon, p. 106.
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Edward Yourdon
1944 - 2016
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„I liked quantum mechanics very much. The subject was hard to understand but easy to apply to a large number of interesting problems.“

—  Willis Lamb American Physicist 1913 - 2008
W. E. Lamb, Super classical quantum mechanics: the best interpretation of non relativistic quantum mechanics, Am. J. Phys. 69, 413-422 (2001).

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„As one learns the language of a subject, one is also learning what the subject is.“

—  Neil Postman American writer and academic 1931 - 2003
Context: As one learns the language of a subject, one is also learning what the subject is.... what we call a subject consists mostly, if not entirely, of its language. If you eliminate all the words of a subject, you have eliminated the subject.

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„It is hard to be finite upon an infinite subject, and all subjects are infinite.“

—  Herman Melville American novelist, short story writer, essayist, and poet 1819 - 1891

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„What is this world? A complex whole, subject to endless revolutions.“

—  Denis Diderot French Enlightenment philosopher and encyclopædist 1713 - 1784
Context: What is this world? A complex whole, subject to endless revolutions. All these revolutions show a continual tendency to destruction; a swift succession of beings who follow one another, press forward, and vanish; a fleeting symmetry; the order of a moment. I reproached you just now with estimating the perfection of things by your own capacity; and I might accuse you here of measuring its duration by the length of your own days. You judge of the continuous existence of the world, as an ephemeral insect might judge of yours. The world is eternal for you, as you are eternal to the being that lives but for one instant. Yet the insect is the more reasonable of the two. For what a prodigious succession of ephemeral generations attests your eternity! What an immeasurable tradition! Yet shall we all pass away, without the possibility of assigning either the real extension that we filled in space, or the precise time that we shall have endured. Time, matter, space — all, it may be, are no more than a point. Dying words of Nicholas Saunderson as portrayed in Lettre sur les aveugles [Letter on the Blind] (1749) Variant translation: What is this world of ours? A complex entity subject to sudden changes which all indicate a tendency to destruction; a swift succession of beings which follow one another, assert themselves and disappear; a fleeting symmetry; a momentary order.

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„The work now before the reader is the most extensive which our language contains on the subject.“

—  Augustus De Morgan British mathematician, philosopher and university teacher (1806-1871) 1806 - 1871
Preface, p. iii

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„Philosophy is the self-correction by consciousness of its own initial excess of subjectivity.“

—  Alfred North Whitehead English mathematician and philosopher 1861 - 1947
Context: Philosophy is the self-correction by consciousness of its own initial excess of subjectivity. Each actual occasion contributes to the circumstances of its origin additional formative elements deepening its own peculiar individuality. Consciousness is only the last and greatest of such elements by which the selective character of the individual obscures the external totality from which it originates and which it embodies. An actual individual, of such higher grade, has truck with the totality of things by reason of its sheer actuality; but it has attained its individual depth of being by a selective emphasis limited to its own purposes. The task of philosophy is to recover the totality obscured by the selection. Pt. I, ch. 1, sec. 6.

„The systematic principle is based upon the hypothesis that there is a structure in the real world that transcends the distinctions of subjective and objective experience.“

—  John G. Bennett British mathematician and author 1897 - 1974
J.G. Bennett (1963) " Geo-physics and Human History: New Light on Plato's Atlantis and the Exodus http://www.systematics.org/journal/vol1-2/geophysics/systematics-vol1-no2-127-156.htm." Systematics vol 1, no 2 (1963): p. 127–156.

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