I told him that I thought it was law logic — an artificial system of reasoning, exclusively used in Courts of justice, but good for nothing anywhere else.
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Diary record of a comment made by Adams to John Marshall, Charles Francis Adams, Memoirs of John Quincy Adams : Comprising Portions of His Diary from 1795 to 1848 (1875), p. 372.John Quincy Adams
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Conceptual graphs are system of logic based on the existential graphs of Charles Sanders Peirce and the semantic networks of artificial intelligence. The purpose of the system is to express meaning in a form that is logically precise, humanly readable, and computationally tractable.
Charles Sanders Peirce
Even though principles of rationality seem as often violated as followed, we still cling to the notion that human thought should be rational, logical, and orderly. Much of law is based upon the concept of rational thought and behavior. Much of economic theory is based upon the model of the rational human who attempts to optimize personal benefit, utility, or comfort. Many scientists who study artificial intelligence use the mathematics of formal logic—the predicate calculus—as their major tool to simulate thought. [...] Human thought is not like logic; it is fundamentally different in kind and spirit. The difference is neither worse nor better. But it is the difference that leads to creative discovery and to great robustness of behavior.
Donald Norman
The ordinary logic has a great deal to say about genera and species, or in our nineteeth century dialect, about classes. Now a class is a set of objects compromising all that stand to one another in a special relation of similarity. But where ordinary logic talks of classes the logic of relatives talks of systems. A system is a set of objects compromising all that stands to one another in a group of connected relations. Induction according to ordinary logic rises from the contemplation of a sample of a class to that of a whole class; but according to the logic of relatives it rises from the comtemplation of a fragment of a system to the envisagement of the complete system.
Charles Sanders Peirce
Among most Christians the Old Testament is little read in comparison to the New Testament. Furthermore, much of what is read is often distorted by prejudice. Frequently the Old Testament is believed to express exclusively the principles of justice and revenge, in contrast to the New Testament, which represents those of love and mercy; even the sentence, "Love your neighbor as yourself,” is thought by many to derive from the New, not the Old Testament. Or the Old Testament is believed to have been written exclusively in the spirit of narrow nationalism and to contain nothing of supranational universalism so characteristic of the New Testament.
Erich Fromm
The complete independence of the Courts of justice is peculiarly essential in a limited Constitution. By a limited Constitution, I understand one which contains certain specified exceptions to the Legislative authority; such, for instance, as that it shall pass no bills of attainder, no ex post facto laws, and the like. Limitations of this kind can be preserved in practice no other way than through the medium of the Courts of justice; whose duty it must be to declare all Acts contrary to the manifest tenor of the Constitution void. Without this, all the reservations of particular rights or privileges would amount to nothing.
Alexander Hamilton
Adams, John Quincy
Adams, Nehemiah
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