There are many cases of these algebras which may obviously be combined into natural classes, but the consideration of this portion of the subject will be reserved to subsequent researches.
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"Natural Classification", p. 119Benjamin Peirce
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While in the course of ages the nucleus of social custom inscribed in law has been subjected to but slight and gradual modifications, the other portion has been largely developed in directions indicated by the interests of the dominant classes, and to the injury of the classes they oppress.
Peter Kropotkin
The man of virtue makes the difficulty to be overcome his first business, and success only a subsequent consideration.
Confucius
An ignorant man believes that the whole universe only exists for him: as if nothing else required any consideration. If, therefore, anything happens to him contrary to his expectation, he at once concludes that the whole universe is evil. If, however, he would take into consideration the whole universe, form an idea of it, and comprehend what a small portion he is of the Universe, he will find the truth. There are many... passages in the books of the prophets expressing the same idea.
Maimonides
...It has been said long ago that there were three classes of people in the world, and while they are subject to variation, for elemental consideration they are useful. The first is that large class of people who talk about people; the next class are those who talk about things; and the third class are those who discuss ideas... (H. J. Derbyshire, "Origin of mental species", 1919)
Eleanor Roosevelt
In all cases, wherein the mind feels itself in danger of being confounded by variety, it is sure to rest upon a few strong points, or perhaps upon a single instance. Amongst a multitude of proofs, it is one that does the business. If we observe in any argument, that hardly two minds fix upon the same instance, the diversity of choice shows the strength of the argument, because it shows the number and competition of the examples. There is no subject in which the tendency to dwell upon select or single topics is so usual, because there is no subject, of which, in its full extent, the latitude is so great, as that of natural history applied to the proof of an intelligent Creator.
William Paley
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