Kant reviewing the enterprise of Aristotle in modern times has given a complete list of the laws of thought, but it is arbitrary in classification and may be legitimately reduced.
22.
In " The Problems of Philosophy ", he cites three " Laws of Thought " as more or less " self-evident " or " a priori " in the sense of Aristotle:
23.
According to the 1999 Cambridge Dictionary of Philosophy, laws of thought are laws by which or in accordance with which valid thought proceeds, or that justify valid inference, or to which all valid deduction is reducible.
24.
The principle was one of the four recognised laws of thought, that held a place in European pedagogy of logic and reasoning ( and, to some extent, philosophy in general ) in the 18th and nineteenth century.
25.
In various spheres, however, even imagination is in practice limited : thus a person whose imaginations do violence to the elementary laws of thought, or to the necessary principles of practical possibility, or to the reasonable insane.
26.
The law of non-contradiction, along with its complement, the law of excluded middle ( the third of the three classic laws of thought ), are correlates of the law of identity ( the first of the three laws ).
27.
He defines the Principle of the Logical as an ideal matrix of the logical principles or laws of thought ( the law of identity, the law of non-contradiction, the law of excluded middle, the law of sufficient reason ).
28.
George Boole, in the introduction to his treatise " The Laws of Thought " made the following observation with respect to the nature of language and those principles that must inhere naturally within them, if they are to be intelligible:
29.
"The Jackrabbit Factor " is an extended version of the dog / rabbit analogy, which follows the fictional Goodman family as they struggle financially and have a number of encounters which help them learn the laws of thought related to success.
30.
From his sickbed he kept up contact with the young Trinity mathematician William Walton, and dictated his thoughts on a wide range of topics, including etymology, bees'cells, Roman money, the principles of a projected Chinese dictionary, and Boole's " The Laws of Thought " ( 1854 ).
