(5) Explain the kinds of absolute identity. Illustrate by propositions and by circles. (6) Explain by word and by diagrammatical illustration relative identity. (7) Symbolize the three forms of identity. Fit words to these symbols. (8) State in three ways the law of contradiction. (9) Show by illustration that _not_ bisects the world. (10) Explain the uses of _not_. (11) Prove that “John Doe is not-honest,” illustrates identity and not contradiction. (12) Symbolize in three ways contradiction. Fit words to these symbols. (13) Illustrate contradictory and opposite terms. (14) Show that words with negative prefixes are not necessarily the contradictory of the corresponding affirmative forms. (15) State and explain the law of excluded middle. (16) Symbolize the law of excluded middle. (17) State the law of sufficient reason. Illustrate. (18) Illustrate the unity of the three primary laws of thought. =11. QUESTIONS FOR ORIGINAL THOUGHT AND INVESTIGATION.= (1) Prove that the judgment is the elemental form of evolved thought. (2) What is meant by evolved thought? (3) Show that “Whatever is, is” is a statement of complete absolute identity only. (4) State incomplete absolute identity. (5) By means of _one_ proposition state relative identity. (6) Show that incomplete absolute identity is a term more or less illogical. (7) Show that these statements are exact expressions of relative identity: All men are some wise. Some men are some wise. (8) Why is the law of contradiction so named? (9) Show that space may be bisected by drawing a circle upon the black board. (10) Show that there is a difference in meaning between “You are not honest” and “You are not-honest.” (11) Is there any difference in meaning between disagreeable and not agreeable? (12) Which is the stronger term not-just or unjust? Why? (13) Give a list of words in which the contradictory forms are expressed by the ordinary prefixes. (14) Illustrate by circles the law of excluded middle. (15) Illustrate by a line-diagram the difference between contradictory and opposite terms. (16) Show that the province of the law of sufficient reason is physical science. CHAPTER 4. LOGICAL TERMS. =1. LOGICAL THOUGHT AND LANGUAGE INSEPARABLE.= Any impression upon the mind tends to manifest itself in some form of expression. Impression which arouses thought tends to expression in the form of symbols. Thought and symbol go hand in hand. Expression, taking the form of word-symbols, constitutes a word-language.